Which of your hands do you use often? A few of us use both our hands well. Most of us are right-handed. Only about five people out of a hundred are left-handed. New-born babies can take things with either of their hands, but after about two years, they like to use their right hands. Scientists don't know why this happen. They have studied it.
They think our animals ancestors （祖先） were right-handed, but this may not be true. Monkeys are our closest relations in the animal world. Scientists have found that monkeys like to use one of their hands more often than the other one, but it can be either hand. Next time you visit a zoo, watch the monkeys carefully, you'll see that some of them use their right hands, while others use their left hands. But men use their right hands better, and this makes life difficult for the left-handed ones. We live in a right-handed world.
Some scientists have found that more of successful people are left-handed, but they don't know why. Now, they are working hard to discover the secret.
1. What percentage are right-handed according to the passage?| A．5% | B．50% | C．95% | D．100% |
| A．left | B．right | C．left or right | D．both left and right |
| A．Scientists know why most of us are right-handed. |
| B．New-born babies can use either of their hands well all the time. |
| C．Our animals ancestors were right-handed. |
| D．Life for left-handed people is more difficult. |
| A．Monkeys. | B．Orangutans. | C．Baboons. | D．Macaques. |
| A．Most people use their right hands more often. |
| B．Why most people use their right hands more often. |
| C．Some researches on why most people use their right hands more often. |
| D．Most people use their left hands more often. |
相似题推荐
【推荐1】In many countries, people are encouraged to buy electric cars. It is said that driving an electric car is good for the environment. But is that true? The University of Minnesota recently studied emissions（排放物）from different cars. The scientists found that sometimes, electric cars are more harmful than petrol（汽油）cars.
Surprising? Well, please pay attention to the word “sometimes”. Electric cars are supposed to be clean. The problem lies in the power that is used to charge（充电）them. If the power comes from wind or solar energy, electric cars will cause little pollution. However, if the power is produced from coal, they will be very harmful. According to the study, emissions from these cars kill about 3, 000 people a year. However, pollution caused by petrol cars only leads to 880 deaths a year.
In fact, sales people are not lying when they say electric cars are clean. However, they are right only when the power used to charge their cars is also clean.
So how clean electric cars are depends on what its electricity comes from. In France, more than half of the power comes from nuclear stations. Electric cars there should be as clean as they are marketed（推销）to be. In many developing countries, however, electricity still mainly comes from coal. India, for example, depends on coal for 61 percent of its power. Only two percent of its electricity comes from nuclear energy. In countries like India, electric cars are not clean at all!
1. According to the passage, electric cars will cause little pollution if the power comes from __________.①coal ②wind energy ③nuclear energy ④solar energy ⑤petrol
| A．①⑤ | B．②④ | C．②③④ | D．②④⑤ |
| A．Driving an electric car is good for the environment. |
| B．Electric cars are as clean as they are marketed to be. |
| C．Emissions from petrol cars kill about 3, 000 people a year. |
| D．In general electric cars in France are cleaner than electric cars in India. |
| A．To state the advantages of electric cars. |
| B．To advise people not to buy electric cars. |
| C．To argue that electric cars are not good for the environment. |
| D．To explain why electric cars are sometimes more harmful than petrol cars. |
Sunflower seeds（向日葵籽）are so popular as snacks in China. You can see people having them while waiting for tables outside the restaurants or watching TV. In fact, this snack is very good for your health. Sunflower seeds are rich in vitamin E. The vitamin is an antioxidant（抗氧化剂）that helps you prevent cancer, heart disease, eye problems and possibly aging. Aging is a problem that most people care about. It not only brings lines on your skin, but also slows you down in thinking and actions.
However, do most of us get enough vitamin E from diet alone? No, surely we don’t get enough of the necessary food for body. Here is the advice that can help us know how to get vitamin E each day.
The benefit（好处）of seeds Different food contains（包含）different vitamins. Experts say people need 90 milligrams(mg) of vitamin E every day. The following table shows different amount of vitamin E in every 10 grams(g) of food.  How to serve Eat alone as a snack, on top of salads, in bread, and in vegetable dishes. |
Even if you’re in perfect health—exercise regularly, keep less stress and eat a balanced diet, you can still benefit from vitamin E. But studies show that vitamin E may be less safe at very high intake, and may throw off the balance of other things in your body. So eat them more, but don’t too much.
1. Which vitamin do sunflower seeds have?| A．Vitamin B. | B．Vitamin E. | C．Vitamin A. | D．Vitamin C. |
a. It prevents cancer.
b. It protects people from heart disease.
c. It makes people’s eyes healthier.
d. It makes people’s skin darker.
| A．abc | B．abd | C．acd | D．bcd |
| A．10 g. | B．20 g. | C．30 g. | D．40 g. |
| A．Eat them with vegetables. | B．Put them in water first. |
| C．Eat them along with other snacks. | D．Cook them with milk. |
| A．an adventure novel | B．a travel guidebook |
| C．a health magazine | D．a gardening website |
【推荐3】Ray turned 113 in May, 2008. She was the 12th oldest person in the world. Ray was one of the few people who lived to more than (多于) 110 years old. We often call them centenarians. “She often drinks milk. She hardly gets angry with others and is always happy. So she is in good health. I think her reason for long life is drinking milk every day and trying to be happy,” said her granddaughter (孙女).
Her doctor, Dr. Perls, said another reason for Ray’s long life is her genes (基因). She got them from her parents. He said, “These genes can keep you in good health and let you live longer. People can usually live to about 80 years old. Those with the right genes can live to more than 100 years. They also pass those genes to their children. So if a person’s parents live long, he or she will probably live long, too.” Dr. Perls also said, “You may not have those genes. But if you don’t smoke, don’t drink too much, and do exercise or do other things to relax, you still can live long.”
1. Ray was the ________ oldest person in the world in 2008.| A．11th | B．12th | C．13th | D．14th |
| A．快乐的人 | B．聪明的人 | C．杰出的人 | D．百岁老人 |
| A．often drinks milk | B．is never happy | C．often drinks juice | D．often gets angry with others |
| A．genes | B．hard | C．short | D．easy |
| A．the family of Ray | B．Ray’s parents | C．why Ray lives long | D．Ray’s doctor |
Teenagers are advised to get eight to ten hours of sleep each night. However, most of them fail to get enough sleep because of heavy schoolwork. And plenty of young people are experiencing a sleep problem which increases their risk of mental ill-health (精神健康状况不佳). Have you ever thought the mobile phone can help teenagers manage their mental health by supporting a good night’s sleep?
Sleep Ninja is a free app created by the Black Dog Institute, a mental health research organization. It is the only app that is specially designed to improve teenagers’ sleep. So far, the results have been encouraging. ▲ .
According to a study, 90% of the app users showed some improvements in insomnia (失眠) and 60% reported improvements in sleep quality. At the same time, the rate of depression (抑郁症) dropped from 77% at the start of the study to 44% after using the app.
Sleep Ninja is not only helpful but also easy to use. Those who use the app only need to set a time when they need to get up in the morning. Then the app will decide when they should be in bed. It will also give them a warning to start a pre-bed habit. Seeing the warning, they’d better take a hot shower, brush teeth and get ready for sleep.
Besides, the app offers other useful ways to teenagers to help them get into a sleep habit. For example, it shows them how to set their things up in the bedroom, how to reduce terrible thoughts at night and what to do during the day to improve their sleep.
1. From Paragraph 1, we know that ________.| A．most teenagers can get enough sleep |
| B．teenagers’ schoolwork isn’t heavy at all |
| C．the sleep problem may lead to mental ill-health |
| D．teenagers should get at least ten hours’ sleep every night |
| A．The app is harmful to teenagers’ sleep |
| B．The app is useless for teenagers’ health |
| C．After using the app, the teenagers don’t like it |
| D．The app helps teenagers get more sleep and more relaxed |
| A．Listen to loud music at night. | B．Take a cold shower before bed. |
| C．Clean the bedroom before bed. | D．Try to avoid terrible thoughts at night. |
| A．the study on different sleep apps | B．the importance of having a good sleep |
| C．an app that helps with teenagers’ sleep | D．the ways to improve teenagers’ sleep |
【推荐2】Parents can be very important teachers in our lives.
Another problem is that parents may expect their children’s interests to be similar to their own.
Parents usually want to pass on their values to their children. But should children always believe what their parents do?
The most important thing to realize is that we all have many teachers in our lives. Our parents teach us, our teachers teach us, and our friends teach us.
根据短文内容，将下面方框内的选项还原到文中空白处，使短文内容完整、通顺，每个选项只能用一次，其中有一个选项是多余的。
| A．If they love science, they may try to force their children to love science, too. |
| B．However, they are not always the best teachers. |
| C．Teachers are always ready to help their students. |
| D．Books, newspapers and televisions also teach us. |
| E．For example, a teacher might see a trip to a big city as a valuable experience. |
| F．When children are young, they believe that their parents are always right. |
Recently, a British survey found that electronic products in teenagers’ bedrooms are influencing their sleep.
The survey was done among 1, 000 British kids from12 to 16. It found that 30 percent of them got just 4 to 7 hours’ sleep every day. But doctors say they need 8 to 9 hours’.
Almost a quarter of the kids said they fell asleep more than once a week while watching TV, listening to music or using other electronic products.
“ This is very worrying,” said Dr Chris, a British expert. “ We call it ‘junk sleep’. It means you don't get enough sleep and the quality of the sleep is bad, too. If you don’t get good rest, you don't perform well in school the next day.
The survey found that 40 percent of the kids felt tired each day, with girls between 13 and 16 feeling the worst. Nearly all the teenagers have a phone, Mp4 or TV in their bedrooms. And many of them have all three.
1. What is this passage mainly about ?
| A．the importance of sleep |
| B．junk sleep |
| C．electronic products |
| A．They are both low in quality |
| B．They are both produced in factories |
| C．People enjoy both in their spare time |
| A．Teenagers need 4 to 7 hours of sleep each day. |
| B．Few of the teenagers have a phone in their bedrooms. |
| C．Teenagers spend too much time on electronic products. |
| A．The use of mobile phone and Mp4 is not allowed at school. |
| B．Forbid teenagers to use any electronic product. |
| C．Teenagers limit(限制) their use of the electronic products. |
【推荐1】People can use the phone to talk with others almost anywhere on the earth. But when you use the phone, you don’t see the person you are talking with.
Today some people are using a kind of telephone called the picture phone or vision phone. With it, two people who are talking can see each other.
Picture phones can be useful when you have something to show the person you are calling. They may have other uses in the future. One day you may be able to ring up a library and ask to see a book. Then you’ll be able to read the book right over your picture phone. Or you may be able to go shopping through your picture phone. If you see something in the newspaper that you think you want to buy, you’ll go to the phone and call the shop. People at the shop will show you the thing you’re interested in right over the phone. You’ll be able to shop all over the town and never even leave your room!
1. Today people can use the phone to talk with others ________.| A．in all town | B．in some places in the world |
| C．only in big cities | D．almost anywhere on the earth |
| A．the picture phone | B．any books | C．the use | D．the change |
| A．write a book | B．do some shopping | C．play games | D．have classes |
| A．badly | B．impossible | C．bad | D．useful |
| A．With the picture phone, two people can’t see each other. |
| B．Today some people are using a kind of telephone called the picture phone or vision phone. |
| C．With the picture phone, you can show something to the person you’re calling. |
| D．Today people can use the phone to talk with others almost anywhere on the earth. |
During the earthquake, the shakings make rocks rise suddenly and even
crack(断裂)open. Houses fall, people are killed or hurt, and sometimes the whole villages or cities are destroyed. Can we do something to keep ourselves safe from earthquakes? Scientists have studied earthquakes and make maps that show the “ earthquakes belts(带)” In areas in these belts, it’s possible for earthquakes to happen. In these areas we should build strong houses to fight against earthquakes.
In the future, scientists will be able to tell when and where an earthquake will before they happen. They can also tell people what to do and how to do it.
1. A large number of earthquakes often happen_________________.
| A．in the area | B．on land |
| C．at night | D．next to mountains |
| A．the result of rock sudden movement |
| B．rocks’ cracking open |
| C．that there are so many plates on the earth. |
| D．that the sea is too deep. |
| A．what kind of houses to build |
| B．what kind of houses can stay up in an earthquake |
| C．where earthquakes may happen |
| D．how to keep themselves safe during the earthquake |
| A．with the help of scientists’ exact predication(预报). |
| B．because of a map showing the “earthquake belts” |
| C．because we can guess the date and place of earthquakes |
| D．as scientists know what to do and how to do it. |
【推荐3】In 1987, a small company named Huawei was started in Shenzhen. After more than 30 years of development, the company has now beaten Apple and become the world’s second-largest maker of smartphones behind Korea’s Samsung. It has also become the world’s largest supplier of 5G.
But recently, Huawei faced some difficulties. The U.S. government ordered a ban on its sales in America. American officials said Huawei gave information that it collected to the Chinese government. At the same time, the U.S. government planned to stop selling parts and services to Huawei, which was believed that Huawei’s business would be hurt.
“We have never received such a request from the Chinese government and we have never tried to get into other systems to collect information.” Ren Zhengfei, Huawei’s founder and president said. “This ban from the U.S. would have little effect on our company. Huawei has enough ability to deal with the problems.” Ren added.
In an interview several years ago, Ren Zhengfei said, “I started Huawei with only £4,000 at the beginning, but now it has become a $100 billion company. The experience was not as romantic as you imagine.”
Facing the ban of the U.S., Huawei is growing. Huawei’s smartphone sales around the world rose 50 percent compared to a year earlier in the first three months of 2019. At the same time, sales from both Samsung and Apple fell. So far, Huawei has grown into the world’s largest telecommunications equipment supplier, selling in 170 countries! It may beat Samsung as the largest smartphone maker in the near future.
1. From what Ren Zhengfei said, we can learn that ________.| A．Huawei can solve the problems they are facing | B．Huawei is asked to supply information to China |
| C．Huawei has got into the system of the U.S. | D．the ban from the U.S. has much effect on the company |
| A．It is romantic to start a company with £4,000. | B．Huawei’s developing experience was hard. |
| C．The romantic experience was a large amount of wealth. | D．People can understand Huawei’s developing experience easily. |
| A．Huawei will grow slowly. | B．Huawei’s sales will be doubled. |
| C．Huawei is full of hope. | D．Huawei is the largest smartphone maker. |
【推荐1】Time is different all over the world. What are people in different cities doing right now? Let’s have a look.
| Li Dong is in Shanghai. It’s twelve o’clock at noon. He is having lunch with his parents at home. | Julie is in Sydney. What time is it? It’s 2∶00 in the afternoon. She is shopping in the supermarket with her friends. |
| Peter is watching a basketball game on TV. Where is he? He’s in Vancouver(温哥华). It’s 8∶00 in the evening. | It’s twelve o’clock at night. Emma is sleeping at home. Where is she? She’s in New York. |
| Mrs. Smith is an English teacher in Moscow. It’s 8∶00 in the morning. She’s having an English class in the classroom. Her students are listening to her carefully. | What is Mr. Brown doing? Oh, he’s exercising in the park. It’s five o’clock in the morning in London. He usually gets up early in the morning. |
1. —What time is it in London?
—It’s .
| A．two o’clock in the afternoon |
| B．eight o’clock in the evening |
| C．five o’clock in the morning |
| A．sleeping at home |
| B．watching a basketball game on TV |
| C．exercising in the park |
| A．English | B．math | C．music |
| A．New York | B．London | C．Moscow |
| A．his parents | B．his friends | C．his classmates |
【推荐2】Rabbit Shiny and tortoise(乌龟) Smily were neighbours. One day they were reading a story about their great grandfathers: Shiny's and Smily's great grandfathers decided to have a race. While Shiny's great grandfather went to sleep during the race, Smily's great grandfather won the race by slowly walking towards the finish line.
Smily said, "If your great grandfather didn't go to sleep, my great granddad might never win. So his win was not a real win."
The next day there was a notice in the jungle (丛林) newspaper. It said that there would be a race and the winner would win many prizes. The race started from the bear's house. From there, the runners had to cross the river. But most of the animals could not both run fast and swim fast. So they didn't know what to do. Shiny and Smily made a plan.
Shiny ran, while smily was sitting on his back. He and other animals, like the deer, reached the river side at the same time. But they saw the swift water and stood there because they were worried. None of them liked the idea of crossing the river. Smily quickly got into the water and Shiny sat on his back. Smily started swimming. Soon they reached the other side of the river. Shiny got down from Smily's back and Smily climbed on Shiny's back again. Shiny ran fast. They reached the finish line first.
"Both of them are the winners." The president of the jungle said, "Shiny and Smily helped each other during the race and they won. So let's give them a big hand."
1. Shiny's great grandfather didn't win because he ________.| A．ran too slowly | B．broke his leg |
| C．fell asleep during the race | D．didn't find the finish line |
| A．There were a lot of prizes for the winner. |
| B．Most of the animals could both run fast and swim fast. |
| C．Smily sat on Shiny's back when Shiny bagan to run. |
| D．Shiny ran as quickly as other animals. |
| A．平静的 | B．湍急的 | C．灵活的 | D．敏捷的 |
| A．were afraid of the water | B．were too tired to swim |
| C．felt worried about Shiny | D．stopped there to have a rest |
| A．Cross the river | B．How to win a race | C．Animals in the jungle | D．Teamwork wins |
In some cities the rubbish is collected and taken outside of city to a dump (垃圾场). Often the city dump is placed where the ground is low or there is a big hole. The kitchen rubbish is broken into small pieces and sent into thesewagesystem (系统). The sewage system takes away the used water from toilets, bathtubs (浴缸) and other places.
To keep mice and flies away, some earth is used to cover the newly dumped rubbish. Later, grass may be planted on the rubbish-filled land. Finally, a house or a school may be built there, and then you'd never know that this had once been an old rubbish dump.
In other cities the rubbish is burnt in special places. The fire burns everything except the metal. Sometimes the metal can be used again in factories where things are made of metal. The food parts of rubbish are put in special piles (堆) and they slowly change into something that looks like black earth. It is rich with the kinds of things that feed plants and help them grow.
1. You can most probably read the passage in _________.
| A．a science book | B．a TV guide | C．a history book |
| A．洗涤 | B．吸尘 | C．排污 |
| A．feed animals | B．feed plants | C．clean soil |
| A．the need for rubbish collection |
| B．ways to do with rubbish |
| C．the process to burn rubbish |
| A．By burning it off. |
| B．By putting it in water. |
| C．By reusing and recycling it. |
