A concern raised by some motorists is that, on urban roads without bicycle lanes, cyclists will slow down motorized vehicles and therefore create congestion(拥堵). Researchers evaluated speeds on six roads in Portland at different times of day, including peak traffic hours. They did a detailed comparative analysis of the travel speeds of passenger cars on lower volume urban roads without bicycle lanes, and found that a 1 mph differential in speed caused by the presence of a cyclist would not cause congestion.
The study also found that cyclists riding on a downhill road, and therefore traveling faster, were less likely to be overtaken by motorists. In a Forbes article on the research. "Cyclists Don't Cause Congestion: ‘Must Get In Front’ Maneuvers By Motorists Pointless," Figliozzi agreed that this has possible suggestions for e-bike riders, who can often travel at faster average speeds than cyclists on standard bicycles. "Those on e-bikes are not as affected by uphills, and have better travel performance regarding speed and acceleration. In a low volume and low-speed street, motorists are less likely to overtake e-bikes because the speed differential is smaller or maybe zero,” Figliozzi told Forbes.
"The hope is that our study discourages policymakers from throwing out shared roadways as a practical option because of the viewpoint that bicyclists will slow down the mobility and speed of drivers," Schaefer, another researcher shared. "While the preference is to separate modes through separated, protected bike lanes — that's not always possible in every urban setting. ‘Bike boulevards’, or ‘Neighborhood greenways’ as we call them here in Portland, are great alternatives on low-volume, low-speed roads to build out a safe, well-connected bicycle network.”
Due to limitations regarding similarities among some site characteristics, this study is currently being expanded to include a large number of sites displaying a more diverse range of functional classifications, roadway markings, speed limits, roadway grades, and traffic volumes and compositions. Additionally, the new study will explore how oncoming traffic speed and volume may affect opportunities for overtaking bicycles, and the underlying connection to passenger car speeds on roads without bicycle lanes.
1. What did the research find according to paragraph 1?| A．Urban roads lacked bicycle lanes. |
| B．Urban roads had more speeding vehicles. |
| C．Bicycles didn't cause traffic jam on lower volume urban roads. |
| D．The presence of a cyclist accidentally slowed vehicles in Portland. |
| A．They are always overtaken by motorists. |
| B．They often ignore the road rules while traveling. |
| C．They need to control their speed on an uphill road. |
| D．They go almost as fast as motorists on the low-speed street. |
| A．In one-way streets | B．In high-speed streets. |
| C．On roads with light traffic. | D．On uphill and downhill roads. |
| A．Potential. | B．Unusual. |
| C．Obvious. | D．Demanding. |
相似题推荐
【推荐1】Have you ever thought of taking a train and having an adventure? Riding the train can be a real adventure. That is how I feel every time I take Amtrak. I often take a four-hour trip to visit my children. Every time I take this trip I never know what will happen.
Last week when I was on the train and over an hour into the train ride, there was a man sitting by himself in the back of the train carrying on a mobile phone conversation — in another language. It was loud and disturbed most of the people on the train. I think it was annoying.
Fortunately I sat next to a wonderful old lady who was taking a two-day trip by train. She said her two daughters were distraught at the thought of her driving for three days to reach her home, although she had no trouble driving. The train ride was the only choice for her. She loved to look out of the window and watch the world go by on the train.
She was fun to talk to and asked me when my children started being parents. That is a very good question. Both of us are old and have children. She asked that same question from time to time.
There are always many people on the train from all walks of life, different countries, and many languages. Riding the train is a great way to increase your knowledge and take in all kinds of cultures. If you get hungry, you can buy food in the food car at any time. If you need to use the restroom there is always one available.
It sure beats driving the car, which has to stop for food and restrooms. And it is better than taking the bus.
1. According to the passage, the purpose of the author's train ride was .| A．to do business |
| B．to see her children |
| C．to visit places of interest |
| D．to see her old friends |
| A．Disappointed. | B．Satisfied. | C．Worried. | D．Pleased. |
| A．the services are quite good |
| B．the food is terribly expensive |
| C．all the passengers are polite |
| D．all the passengers are American |
| A．A wonderful lady |
| B．The history of Amtrak |
| C．A painful experience on the train |
| D．Train ride—a cultural experience |
【推荐2】Car companies such as Tesla and Nissan have been leading the way in electric car technology. What makes these car “green” is that because they run on electricity instead of gas, they do not give off any polluting greenhouse gases. The Toyota Mirai is also a kind of green car, since it is powered by a hydrogen fuel battery(氢燃料电池).
Hydrogen, as you know, exists in large quantities on the earth. It was used to power gaslights for centuries before electric lights came along. Hydrogen fuel can be made from many sources including water, natural gas and even rubbish. As for energy contained, 9.5kg of hydrogen is similar to 25kg of gas. According to Toyota, the two tanks on the Mirai hold 5kg of hydrogen, and can cover a distance of over 300 miles. This is twice the output of gas cars.
In a hydrogen fuel battery, the one proton (质子)and one electron in a hydrogen atom(原子) are broken up. While the electrons power the car, the hydrogen protons work with the oxygen atom to produce water. At the same time, it also produces a lot of heat which turns this water into water vapor. This is the reason why cars running on hydrogen fuel batteries give off water vapor from their exhaust pipes when running.
According to Toyota, it takes only 5 minutes to refill a hydrogen tank, which is much quicker than charging (充电) electric cars. However, the biggest difficulty for the company is the availability of hydrogen-charging stations. California and the New England states are in the process of building a hydrogen superhighway—with charging stations along the way. Countries like Germany, Japan and UK are also adding more charging stations.
The Toyota Mirai will be available in the U.S. in the second half of 2015 for $ 58,000. This hydrogen-fueled car will probably take the place of gas cars in the near future. After all, it is an energy-saving and environment-friendly car.
1. According to the text, nowadays hydrogen .| A．can only be used as a fuel for cars. |
| B．is a newly-discovered energy source |
| C．provides more energy than the same amount of gas |
| D．will soon become the main fuel for most of Toyota’s cars |
| A．water vapor and weather | B．how the Toyota Mirai works |
| C．different kinds of batteries | D．why hydrogen is very popular |
| A．It runs on both gas and hydrogen. |
| B．It will soon take place of electric cars. |
| C．It gives off only a few polluting greenhouse gases. |
| D．It may sell well with more charging stations around. |
| A．practicality | B．instruction |
| C．expansion | D．composition |
【推荐3】Driving in Canada is similar to driving in many parts of the United States. Distances and speeds, however, are posted in kilometers per hour and some signs, particularly in Quebec, may only be in French.
Unless otherwise posted, the maximum speed limit in Canada is 50km/hr in cities and 80km/hr on highways. On rural highways, the posted speed limit may be 100km/hr. It is illegal to take automobile radar detectors (汽车雷达检测器) into Quebec, Manitoba, and the Yukon. Seat belt use is required by law for all passengers, and child car seats must be used by children under 40 pounds. Some provinces require drivers to keep their vehicles’ headlights on during the day and some have banned driving while using a handheld cell phone. Motorcycles cannot share a lane, and safety helmets for motorcycle riders and passengers are necessary.
Highway 401, from Detroit to Montreal, is one of the busiest highways in North America. It has been the scene of many deadly traffic accidents due to sudden and severe weather changes, high rates of speed, and heavy truck traffic. Thus drivers should be alert while travelling here.
Please refer to our Road Safety page for more information. Also, we suggest that you visit the website of Canada’s national authority responsible for road safety.
1. Which of the following is TRUE according to the text?| A．All signs on the roads in Quebec are in English. |
| B．Automobile radar detectors are allowed to be used in Manitoba. |
| C．Passengers may choose not to wear seat belts while in a car in Canada. |
| D．The speed of cars in Canadian cities should be less than 50km/hr. |
| A．careful | B．relaxed | C．nervous | D．pleased |
| A．Different traffic rules in Canada |
| B．Tips for traveling by car in Canada |
| C．Special rules for driving in Canada |
| D．Traffic safety and road conditions in Canada |
| A．Drivers in Canada | B．Drivers in America |
| C．Traffic police in Canada | D．Traffic police in America |
【推荐1】It has been a hard year for the farmers in Michigan and more attention needs to be paid to their emotional well-being, according to a report written by Jim Zook, director of the Michigan Corn Growers Association.
“Nobody has seen a year that has dealt with so many challenges that we have seen with the weather, the markets, the trade and the politics. All of them together have become a storm,” said Zook.
The farmers have been struggling this year because of volatile (易变的) weather and markets. According to Zook, some corn growers will not be able to go on for another year. He said the Michigan Corn Growers Association was putting together programs to provide emotional support for the farmers. “The biggest thing is that we just want to make sure that the farmers in Michigan will work together through this difficult time,” said Zook.
Zook said planting was delayed in the spring because of the cold and wet weather. “We didn’t get as many acres (英亩) planted as what we had hoped,” said Zook. “And so there were a number of acres that kept idle this year.” Zook said he was hopeful that the snow would melt. If it did, he said the farmers would still be able to harvest the corn. But he said if the snow melted, they then would need low temperatures to freeze the ground so the ground could support the weight of heavy harvesting equipment for the corn.
“The challenge will appear in soybean (大豆) harvest because they are lower to the ground,” said Zook. “And if that snow is up on the bean, they won’t be able to get them.”
1. Which can best describe the situation of the farmers in Michigan?| A．Optimistic. | B．Familiar. | C．Embarrassing. | D．Challenging. |
| A．Help each other. | B．Buy more equipment. |
| C．Save their expenses. | D．Focus on the weather. |
| A．Hopeful. | B．Developing. | C．Free of charge. | D．Not in use. |
| A．Interested. | B．Curious. | C．Worried. | D．Angry. |
【推荐2】The term “oniomania”, which is used to describe people with obsessive (强迫性的), problematic shopping and spending behaviors, consists of the Greek words “onios”, meaning “for sale”, and “mania”. Also known as Compulsive Buying Disorder (CBD) and Impulsive Compulsive Buying Disorder (ICBD), oniomania can leave negative impact on your financial health and mental wellbeing if left untreated.
At this point you might be wondering: “What’s the difference between an oniomaniac and someone who likes to shop perhaps a bit too much?” We tend to believe that the two are rather similar. Clinically (从临床上看), however, they are quite easy to separate.
Although people who like shopping will return an item if they do not like it and start budgeting if they run low on money, people suffering from oniomania are no longer able to make reasonable, let alone financially responsible, decisions. They sometimes emotionally dissociate from what they are doing, making their purchases while they are not really sure what to buy. Spending relieves feelings of anxiety and depression, but only temporarily. In a short time, they might become moody, annoyed, and depressed, and their confidence declines sharply.
To a certain extent, spending makes everyone feel good. In 2007, a group of researchers from MIT, Stanford and Carnegie Mellon looked at the brains of American consumers via MRI technology and found that when they purchased desirable objects, their nucleus accumbens — the brain’s pleasure center — would light up, indicating a positive stimulation. This stimulation can take on different forms. For instance, some people get particularly excited when they believe they have gotten a good deal. This, researchers say, is the result of the prefrontal cortex — the decision-making part of our brain — interacting with the insula, the part of our brain that processes pain. According to psychotherapist Joyce Marter, compulsive buyers in the U. S. make an average of 156 impulsive purchases per year. Each purchase sets them back around $81. 75, making for a grand total of $5, 400 per year and a thorough shocking $324, 000 per lifetime. That money could have been invested in a home, an education, or other products that you actually need in order to survive and thrive in the world. Ultimately, though, treating oniomania is about much more than just protecting your finances from your own impulses — it’s also about maintaining your personal mental health and improving your relationships with others.
1. What do we know about oniomania?| A．It is a normal behavior. |
| B．It influences people’s health. |
| C．It means people who like shopping. |
| D．It describes people’s difference. |
| A．Run out of |
| B．Go short of |
| C．Look down on |
| D．Become rich in |
| A．Why many researchers take part in the study. |
| B．How everyone makes a wise decision. |
| C．How desirable objects are well welcome. |
| D．Why shopping makes common people happy. |
| A．It is beneficial to education. |
| B．It develops our desires. |
| C．It keeps our mind healthy. |
| D．It is harmful to relationships. |
【推荐3】Are Baiji Dolphin Extinct?
Does the Yangtze River still have baiji, the graceful, grey dolphin with tiny eyes and a long narrow beak?
Since November 6, a team of scientists from China, Switzerland, the United Kingdom, the United States, Germany and Japan have been searching for any sign of the freshwater dolphin on the middle and lower sections of the river. After six weeks, they came back empty-handed.
Wang Ding, of the Chinese Academy of Sciences, who is the head of the team, said he has seen a sharp decline in the baiji population over the past few decades. However, he is still unwilling to call the species extinct, and adds, "We will try every effort to save them as long as they are not found to be extinct."
The baiji is shy and nearly blind and is one of the world's oldest dolphin species. It dates back some 20 million years and is found only in the Yangtze. It's listed as one of the 12 most endangered animal species in the world.
Around 400 baiji were believed to be living in the Yangtze until the 1980s. A 1997 survey spotted 13. Two years later their numbers were down to two.
The rapid disappearance of this dolphin over the past two decades coincided with (与……同时) the rapid expansion of economic development along the river. Research on some dead baiji collected in recent years showed that more than 90 percent of the deaths were caused by human activities.
One reason is that over-fishing has cut the dolphin's food sources. Dams built along the river and neighboring waterways have also kept them from swimming into and out of their habitats. Meanwhile, waste discharge(排放) has seriously polluted the river. And heavy river traffic has greatly reduced their living space.
The disappearance of the baiji would be the first instance of a large aquatic mammal(水生哺乳动物) being driven to extinction since hunting killed off the monk seal (僧海豹)around 1952.
1. Baiji dolphin used to live in ________ of the Yangtze River.| A．upper sections | B．middle sections |
| C．middle and lower sections | D．lower sections |
| A．dissatisfaction with our government | B．eagerness to write the passage |
| C．anger for not having a baiji | D．love of baiji |
| A．England. | B．India. |
| C．Japan. | D．America |
| A．400 | B．At most 2 | C．13 | D．2 |
| A．Over-fishing. | B．Dams built along the river. |
| C．Heavy Road Traffic | D．Waste discharge. |
As a writer I know about winning contest, and about losing them. I know what it is like to work hard on a story only to receive a rejection slip from the publisher. I also know the pressures of trying to live up to a reputation created by previous victories. What if she doesn’t win the contest again? That’s the strange thing about being a parent. So many of our own past scars and dashed hopes can surface.
A revelation（启示）came last week when I asked her, “Don’t you want to win again?” “No,” she replied, “I just want to tell the story of an angel going to first grade.”
I had just spent weeks correcting her stories as she spontaneously（自发地）told them. Telling myself that I was merely an experienced writer guiding the young writer across the hall, I offered suggestions for characters, conflicts and endings for her tales. The story about a fearful angel starting first trade was quickly “guided” by me into the tale of a little girl with a wild imagination taking her fist music lesson. I had turned her contest into my contest without even realizing it.
Staying back and giving kids space to grow is not as easy as it looks. Because I know very little about farm animals who use tools or angels who go to first grade, I had to accept the fact that I was co-opting（借用）my daughter’s experience.
While stepping back was difficult for me, it was certainly a good first step that I will quickly follow with more steps, putting myself far enough away to give her room but close enough to help if asked. All the while I will be reminding myself that children need room to experiment, grow and find their own voices.
1. What do we learn from the first paragraph?
| A．Many children find lots of fun in mindless activities. |
| B．Rebecca is much too occupied to enjoy her leisure time. |
| C．Rebecca collects online materials for her writing. |
| D．Rebecca is different from any other child of her age. |
| A．She did not quite live up to her reputation as a writer. |
| B．Her way to success was full of pains and frustrations. |
| C．She was constantly under pressure of writing more. |
| D．Most of her stories had been rejected by publishers. |
| A．She possessed real talent for writing. |
| B．She wanted to win. |
| C．She wanted to share her stories with readers. |
| D．She had won a prize already. |
Our historic, restored 1921 Dentzel Carousel is located near the Fisher Family Children’s Zoo. This unique merry-go-round delights kids of all ages as they choose to ride a horse, a cat, a rabbit, or even a giraffe without considering the weather condition.
Tickets are $ 4 per person.
Adults may ride free when standing by a paid child.
Elinor Friend Playground
The newly repaired Elinor Friend Playground lights the imagination of children who is not beyond 12. This unique space is modeled after three distinct bio-regions, which take their themes from specific ecosystems and appeal to distinct age groups: a River Play Area for toddlers (6 months—2 years), a Polar Zone exploration space for pre-schoolers (2—5 years), and a Banyan Tree climbing structure for pre-teens (5—12 years).
Tickets are $ 7 per person (Free with zoo admission).
Adults pay zoo admission.
Little Puffer Miniature Steam Train
Add a ride on the historic Little Puffer miniature steam train to your visit to the San Francisco Zoo. Like generations before you, you’ll make wonderful childhood memories for your kids. Little Putter does not run in wet weather due to slippery tracks, and is closed at a regular time period for repair. Call the Zoo before your visit.
Tickets are $ 7 per person.
Children under 3 may ride free (ticket required) when accompanied by a paid adult.
(A special passenger car on the Little Puffer miniature steam train is designed to hold a wheelchair)
Zoo Keys
The ever-popular storybooks have returned to the Zoo, activated by the beloved, plastic animal keys that have become nostalgic icons to visitors from years past. At Storybook sites around the Zoo, visitors can listen to recordings of stories in different languages and fun facts about the animals in all kinds of weather conditions. You can purchase your Zoo Key at the Admissions Gate or in the Membership Office or online.
Zoo Keys are $ 5 each.
Children under 1 may ride free when accompanied by a paid adult.
1. What is special about Dentzel Carousel?| A．It has a long history. | B．It has models of animals |
| C．It is for children of all ages. | D．It has the cheapest charge. |
| A．6 months - 2 years. | B．6 months - 12 years. |
| C．2-5 years. | D．5-12 years. |
| A．Dentzel Carousel. | B．Elinor Friend Playground. |
| C．Little Puffer Miniature Steam Train. | D．Zoo Keys. |
【推荐3】Dutch author Marieke Lucas Rijneveld has become one of the youngest writers to be shortlisted （列入候选） for a Booker prize, after their debut novel （处女作）made the final line-up for the International Booker.
Rijneveld. a rising star in Dutch literature, is 28― lightly older than British author Daisy Johnson was when she was shortlisted for the Booker prize in 2018 age 27. The author, who identifies as male and uses the pronouns they/them, was shortlisted after a six-hour virtual (虚拟的) judging meeting for the £50,000 prize, which is shared equally between writer and translator, for The Discomfort of Evening, translated by Michele Hutchison. The novel, tells of a girl whose brother dies in a skating accident and draws from Rijneveld’s own experiences: when they were three, their 12-year-old brother was knocked over and killed by a bus.
“Rijneveld’s language renders (重现) the world again, revealing the shocks and violence of early youth through the angle of a Dutch dairy farm. The strangeness of a child looking at the strangeness of the world is in it,” said judges of the work.
“The Discomfort of Evening is one of six novels in the running for the International Booker, each of which,” said chair of judges Ted Hodgkinson, “restlessly reinvents （重 塑）received narratives, from foundational myths to family folklore, plunging us into discomfiting and delightful encounters with selves in a state of transition (过渡)”.
Hodgkinson chaired a panel （专家组）of five judges who selected the shortlist from 124 submissions. The coronavirus pandemic meant their meeting had to be virtual, but Hodgkinson said he and his panel still managed to discuss the line-up for more than six hours.
The winner will be announced on 19 May.
1. We can learn from the 2nd paragraph that_____________.| A．Rijneveld is a young male writer. |
| B．Rijneveld and the translator Michele Hutchison will share the $50,000 prize. |
| C．Daisy Johnson was the youngest writer shortlisted for a Booker prize this year. |
| D．The Discomfort of Evening is partly adapted from Rijneveld’s own experiences. |
| A．Rijneveld’s brother died from a skating accident. |
| B．The judges of the work speak highly of Rijneveld’s language. |
| C．Six novels reveal the shocks and violence of early youth on a Dutch dairy farm. |
| D．Hodgkinson and his panel were unhappy to discuss the line-up online for over six hours. |
| A．Because of the coronavirus pandemic. |
| B．Because there were too many submissions. |
| C．Because it was more effective online. |
| D．Because the judges lives too far away from each other. |
| A．Booker prize winner will be announced |
| B．Rijneveld, one of the most youngest Booker winner |
| C．International Booker prize shortlist led by 28-year-old’s debut |
| D．The Discomfort of Evening a novel running for the International Booker |
【推荐1】When milk arrived on the doorstep
When I was a boy growing up in New Jersey in the 1960s, we had a milkman delivering milk to our doorstep. His name was Mr. Basille. He wore a white cap and drove a white truck. As a 5-year-old boy, I couldn't take my eyes off the coin changer fixed to his belt. He noticed this one day during a delivery and gave me a quarter out of his coin changer.
Of course, he delivered more than milk. There was cheese, eggs and so on. If we needed to change our order, my mother would pen a note— "Please add a bottle of buttermilk next delivery"—and place it in the box along with the empty bottles. And then, the buttermilk would magically appear.
All of this was about more than convenience. There existed a close relationship between families and their milkmen. Mr. Basille even had a key to our house, for those times when it was so cold outside that we put the box indoors, so that the milk wouldn't freeze. And I remember Mr. Basille from time to time taking a break at our kitchen table, having a cup of tea and telling stories about- his delivery.
There is sadly no home milk delivery today. Big companies allowed the production of cheaper milk thus making it difficult for milkmen to compete. Besides, milk is for sale everywhere, and it may just not have been practical to have a delivery service.
Recently, an old milk box in the countryside I saw brought back my childhood memories. I took it home and planted it on the back porch. Every so often my son's friends will ask what it is. So I start telling stories of my boyhood, and of the milkman who brought us friendship along with his milk.
1. Mr. Basille gave the boy a quarter out of his coin changer .| A．to satisfy his curiosity | B．to please his mother |
| C．to pay for the delivery | D．to show his magical power |
| A．He wanted to have tea there. | B．He was a respectable person. |
| C．He was fully trusted by the family. | D．He was treated as a family member. |
| A．It is forbidden by law. | B．Its service is getting poor. |
| C．It has been driven out of the market. | D．Nobody wants to be a milkman now. |
【推荐2】The first visit to a foreign country that I can remember was when I was about seven years old. We live about 5 miles away from the Canadian border(边界). My family and I went to Parc Safari, Quebec, a wonderful place that has animals and rides. We drove down a nice long road. My sister and I sat in the back of the car, and it was a hatchback(有仓门式后背的汽车) so we opened it up. I remember feeding the animals snacks we had bought for ourselves.
The time we went we were told there would not be monkeys because they had escaped and had not been found. I remember thinking to myself, how cool it would be to see a monkey in our backyard.
Even though the monkeys were not there it was still so much fun. When we reached the area that had camels, giraffes and other animals, I remember one of the camels reached into the car to get our snacks. However, we were a little gross out because the camels seemed to froth(吐白沫) at the mouth and we had camel slobber(口水) all over the car and us.
It was one of the best family vacations that I can remember. It was not too far from home, it was in a different country and it was with my family. I cannot remember if we went on the rides or not but seeing many animals was a great time. Now I am grown up and have a son, and I am planning to go there again. He is 7 years old and I think he is at a great age to enjoy a trip like this. I am sure it has changed a lot over the years but it will still be a great family trip.
1. Where did the author live when he was 7 years old?| A．In Canada | B．Near the Canadian border |
| C．In the central US | D．In Parc Safari |
| A．offered by people living there | B．we bought for them |
| C．we prepared for ourselves | D．cooked by my sister |
| A．surprised | B．excited | C．tired | D．uncomfortable |
| A．To revisit the place he went to at seven. | B．To take his 7-year-old son to a zoo. |
| C．To have a family trip in his own country. | D．To have a holiday abroad with his parents. |
【推荐3】Many people have the habit of browsing the Internet on their phones before going to sleep. Even though you might have important things to plan for the next day, this habit is actually very unhealthy.
There are a number of studies and researches about the effects of the longer use of mobile phones at night. One of these is about the health and well-being of humans, which shows negative findings about this kind of subject. Mobile phones’ radiation has become popular to those who are always aware of its damaging and harmful effects that can actually harm people in the long run. This issue is extremely alarming and disturbing; especially when the radiation happens to someone, it becomes seriously dangerous. The blue lights from your mobile phones contain numerous severe health issues.
Blue lights have been included in the light spectrum(光谱) which is commonly a group of colors in the ray of light and it only shows that there is no difference between exposing to the sun and using our mobile phones, because they both contain blue lights. In some way, being exposed to that kind of light at night is extremely harmful to the eyes.
Such light at night results in disturbing sleep and increasing the risk of cancer. Melatonin(褪黑激素) is the natural weapon of the body in fighting against cancer. However, it is being blocked by the blue lights. If this happens once, it might become a big health problem, so you have to put in mind that using mobile phones continuously at night leads to severe health issues.
It is not really that bad to use your mobile phones at night if there is an emergency or an urgent need to use it. The important thing is to just minimize your time with your mobile phone for your entire health.
1. What do researchers think may make the longer use of phones at night more harmful?| A．Exposure to the sun. | B．Radiation. | C．Disturbing sleep. | D．Melatonin. |
| A．Blue lights from them do harm to our eyes. |
| B．Their lights are made up of the same color. |
| C．The light from them is called the light spectrum. |
| D．They both have bad effects on our health. |
| A．We will be disturbed by depression. |
| B．We are bound to be infected with cancer. |
| C．We may be troubled by some health problems. |
| D．Melatonin will fight against blue lights. |
| A．There will be more studies about using phones. |
| B．It is harmful to frequently browse the Internet. |
| C．More bad habits are connected with using phones. |
| D．We should limit phone use before bedtime. |
