1 . If you think you’d like to live on Mars, you may have that possibility by 2023. A Dutch company called Mars One will soon advertise for people interested in colonizing (开拓) Mars. If you have all the necessary skills, you could be one of the first colonists. Are you ready for the challenge?
You won’t have to pay for the mission to Mars. Mars One has already received money from some donors and is hoping to get more from TV viewers who will become interested in the show where all applicants have a debate for the rare chances.
The main responsibility of the first colonists is to create an artificial environment on Mars where there is no air to breathe and no land to farm. Scientists know it’s quite possible because something similar has already been done in Antarctica.
Another problem is that space travel to Mars takes nearly a year to get to Mars and the colonists will live the rest of their lives there. When a human lives in an environment without gravity or with low gravity for a long time, the systems in the body weaken. Luckily, spinning (旋转) the spaceship can create artificial gravity, and artificial gravity can ease these problems. It will also be difficult for Mars colonists to be far from home, living in small spaces, and seeing the same people over and over. Colonists with depression could put the mission in danger. Fortunately, a few years ago, a joint Russian and European project called the Mars500 Mission studied people’s reactions in a Mars-like environment. It is viewed as a great success because scientists were able to see how people handle emotional and physical stresses.
Recent studies show that seven percent of people would want to go on such an adventure.
Mars One will soon start accepting its first colonists. Are you interested?
1. What do we know about the applicants to Mars from the first two paragraphs?| A．They will land on Mars in 2023. |
| B．They can get money from donors. |
| C．They will compete in a TV show. |
| D．They do not need special skills. |
| A．Create earth-like conditions. |
| B．Build labs in Antarctica. |
| C．Spin the spaceship. |
| D．Start the Mars500 Mission. |
| A．Difficult and dangerous. |
| B．Different but adaptable. |
| C．Challenging and unbearable . |
| D．Acceptable but depressing. |
| A．Mars: our final destination? |
| B．Ready to be Mars’ colonists? |
| C．Space travel: a thrilling adventure? |
| D．Are you a qualified Mars astronaut? |
2 . Have you ever noticed little specks (斑点) in the iris (the colored part) of your eyes? The specks, which occur in about 60% of the population, are clusters (组,族) of abnormal melanocytes (黑素细胞).Experts suspect that, like skin freckles, they may develop in response to sun exposure."We think that the pathway involved in iris freckles formation could be quite similar." Christoph Schwab, MD, wrote in an email to Health.
To investigate this theory, Dr.Schwab teamed up with other ophthalmologists (眼科医生) and dermatologists (皮肤病专家) to examine the skin and eyes of more than 600 people.Seventy-six percent of the participants possessed at least one eye freckle.They tended to be older than folks who had no eye freckles.And they were also more likely to report a high number of sunburns during their lifetime, and have sun-damaged skin and age spots.The researchers also noted that the participants were recruited（招募） from public swimming pools.They may have led outdoorsy lifestyles, with greater exposure to UV light than the average person.
While eye freckles themselves are usually not dangerous to health, they may serve as a warning sign for sun-related health problems, the researchers concluded."The presence of iris freckles also indicates sun damage to the skin, a risk factor for several different kinds of skin cancer.Within this context, there is certainly a need for further studies investigating the association between skin cancer and iris freckles, they wrote.
"The investigation of iris freckles in several eye diseases could lead to new knowledge regarding their pathogenesis (病原)," says Dr.Schwab.
For now, Dr.Schwab urges caution: If someone exhibits iris freckles, especially at a young age, I would reconsider current sun protection strategies."To keep your skin safe and your eyes freckle-free, remember to apply plenty of SPF even when it's cloudy, and wear shades or a hat to protect your eyes from the sun.
1. What is to blame for eye freckles?| A．Skin freckles. | B．Sun exposure. | C．Personal lifestyles. | D．Abnormal melanocytes. |
| A．prove more population owns them | B．find out the reasons for them |
| C．prevent people from skin cancer | D．find the link between skin and eyes |
| A．Take more exercises. | B．Apply plenty of SPF. |
| C．Work in public swimming pool. | D．Wear shades or a hat outdoors. |
| A．Health. | B．Society. | C．Education. | D．Technology |
3 . When I was a kid, my sister and I would fight all the time over nearly everything. But as we grew older, our bond strengthened by sharing secrets, offering advice and trading clothes. Having a sister by my side while growing up taught me many lessons about the unique bond.
And now, thanks to an 8-year long study that’s making the rounds on the Internet again, science is confirming what I know is true. In the study, researchers discovered that having an older or younger sister can help ease the anxiety for kids between the ages of 10 and 14 years. They also found that people with sisters can “learn how to make up and to have control over their emotions again, which are skills that undoubtedly serve children well.
The revival of this study actually comes on the heels of another newer study, which shows that it’s not just the older kids and parents who influence and shape children as they grow. It turns out that younger siblings(兄弟姐妹) do too, and what’s more, they may also give their older siblings a greater chance of developing empathy (同情).
The Canadian study followed 452 pairs of siblings, all between a year-and-a-half and 4 years old. The researchers found that having a younger sibling increased the older sibling's level of empathy.
This research confirms that sisters are pretty amazing in making the world a much lovely place. As the mom of two boys, I often wonder what kinds of lessons they will learn from their younger sister. Perhaps they will be the same lessons I learned from mine that cooler heads always win. This study gives me hope that all those endless arguments between my kids may actually be laying the groundwork for conflict-settlement skills.
1. What can we learn from the study?| A．Children under four develop empathy fastest. |
| B．It is normal for siblings to quarrel. |
| C．Having siblings is not always a headache. |
| D．Having sisters is helpful to mental health. |
| A．Result | B．Beginning. |
| C．Reappearance. | D．Significance. |
| A．They love their mom very much. |
| B．They have a higher level of empathy. |
| C．They often quarrel with one another. |
| D．They have learned the same lessons as the the author. |
| A．Siblings have a unique bond. |
| B．Siblings have something in common. |
| C．Having siblings is good to children. |
| D．Children having siblings are considerate. |
4 . If our kids don’t fall, they don’t learn to get up. I still remember the day in high school that my mom forgot to pick me up from school. I’m the oldest of four children, and no doubt she’d had a long day with the other kids and it’d slipped her mind. After waiting at school for an hour, I walked the three miles home, and when I got to my house, I shut our front door with anger, stormed into the kitchen and screamed in my mom’s face that she’d forgotten me.
Later that night, my dad told me I no longer had a ride to school the next day. I figured my mom would still take me, but when the morning came, she refused. It was midterm, and as a straight-A student ready to start college applications, being late wasn’t an option (选择). In my mind, missing these tests would have been the end of my academic career. I begged my mom. I told her she was ruining my future and everything I’d worked for. But she held her ground, and that day, I walked to school. And I missed my tests.
My mom didn’t rescue me from failure. She let me suffer from it. She let me figure it out. She let me learn. Now, as a mom myself, I’ve realized that I want my kids to experience failure because failure is how we grow, learn and think outside of ourselves. It’s how we self-educate to learn what’s right and respectable, and what’s not. It’s how we become responsible and enthusiastic. Falling down makes us better because we learn how to get up.
1. What is one of the reasons that the author got angry that day?| A．She was tired. | B．She failed in a test. |
| C．She was late for school. | D．She had to walk home by herself. |
| A．Terrible. | B．Meaningful. | C．Embarrassing. | D．Colorful. |
| A．gave in to me | B．said yes to me |
| C．stayed in the place | D．kept to her idea |
| A．My Way of Growing | B．The Value of Failure |
| C．My Love for Mother | D．Failure in My Life |
5 . Covid-19 has brought a great deal of trouble for all of us since March 2020. During this time, mobile phones have been the solution for the boredom and restlessness caused from staying indoors. The most downloaded apps on play store 2020 are;
TikTok
TikTok was the most downloaded app. With over 111.9 million downloads, TikTok has seen a huge growth in 2020, twice more than what it got in 2019. 20% of its total downloads were from India and around 9. 3% of the total downloads were in the US.
Zoom
Zoom was the second most installed app in the overall downloads category. With nearly 94. 6 million installs, Zoom is the most used app for online meetings and virtual classrooms. 17% of its downloads were in the US and India. Offices and educational institutes were shut down and to continue working and studying from home, people relied heavily on Zoom for video conferencing and calling.
WhatsApp ranked third in overall downloads with more than 100 million downloads. It is one of the most popular and widely used chat applications; WhatsApp also supports communication between international phone networks.
It ranked fourth in the overall downloaded list. Facebook is the world’s most popular social networking application. Facebook builds technologies that give people the power to connect with friends and family, find communities and grow businesses.
1. What do we know about TikTok?| A．It is an India-based app. | B．It has most users in America. |
| C．It is used for growing business. | D．It has doubled its download than in 2019. |
| A．TikTok. | B．Zoom. | C．WhatsApp. | D．Facebook. |
| A．Communication. | B．Training. | C．Teaching. | D．Payment |
6 . Just like humans, birds too rely on sound to communicate. However, they do not have a “language” in the true sense of the word and instead produce a variety of sounds to convey different emotions.
Often, birds recognize their mates(or young) by sound rather than sight. Hungry young birds use begging calls to let their mothers know it is feeding time. Alarm calls, flight calls and warning calls are other sounds made frequently by adults.
A new study shows that songbirds rehearse(排演) their songs even in their sleep. The activity in the brain of the birds when asleep is similar to the brain activity when the birds were awake and singing. The team used tiny recording devices to measure the activity of individual brain cells in four songbirds both when they were singing and when they were asleep.
Apparently the bird stores a song after hearing it, and then rehearses it later in its sleep. Scientists now believe the birds “dream of songs and tunes” to help them master the fine art of singing and that sleep plays a key role in the learning process!
Many songbirds learn to sing listening to adult birds of the same species. However, if separated from the adults, the young birds develop sounds which are hard to understand instead of normal song patterns. Researchers carried out an experiment in which a male bullfinch (灰雀) was raised by a female canary(金丝雀). The bullfinch soon learned the canary’s song and when it was later mated to a female bullfinch, Mr.Bullfinch taught his children the canary’s songs.
Last year, a British survey of London’s songbirds showed that the city’s birds are losing their tunes. Birds could hardly hear one another, over the traffic noise; as a result, instead of copying the sweet notes of the adults, young birds were copying the sounds they heard most often, namely car horns and beeping cellphones!
1. According to the passage, birds recognize their mates by ________.| A．using their own words | B．listening to their sounds |
| C．looking at their appearances | D．singing the same songs |
| A．Flight calls. | B．Alarm calls. |
| C．Begging calls. | D．Warning calls. |
| A．young birds learn to sing from whom they live together with |
| B．birds only learn how to sing from the same adult species |
| C．it's not easy for adult birds to teach young birds songs |
| D．a canary's song is more beautiful than a bullfinch's |
| A．traffic noise makes young birds become deaf |
| B．birds in the city can sing as sweetly as those in the wild |
| C．birds in the city recognize their mates mainly by sight |
| D．noise pollution causes much trouble for birds in the city |
7 . Tracking wildlife is a tough job. Take the case of a one-eared leopard named Pavarotti.
Kasim Rafiq, a wildlife biologist at Liverpool John Moores University. “So I used to get up at the crack of dawn, follow his tracks and try and find him. So one day, I went out, and I was looking for him. And his tracks took me off road through this woodland area...and...”
Before he knew it, the wheel of his Land Rover was stuck in a deep hole. He wasted several hours getting it out. And then, on the way back to camp, he came across some local tour guides and their safari (观赏野兽的旅行) guests, who’d had way better luck spotting Pavarotti. “Basically, they laughed and they talked to me that they’d seen him that morning.”
Rafiq then realized that tourist wildlife sightings might be an untapped source of information about wild animals.
So he and his team worked with a safari lodge in Botswana to analyze 25,000 tourist photographs of wildlife. They compared those data to the estimates they made with traditional wildlife biology methods.
It turned out that the estimates from tourists’ photos were just as good as those gleaned (四处搜集) from traditional methods. And the tourists were actually the only ones to see elusive (难以捉摸的) leopards — the researchers would have missed the cats without the citizen science data. The results are in the journal Current Biology.
The idea is not to put wildlife researchers out of a job. “The reality is there are so many interesting things we still have to find out about these large carnivores (食肉动物) and so many conservation (保护) projects that need to be carried out that we don’t have the time or resources to do them all.” And tourist photos might help make sure that all the local carnivores are spotted.
Thanks for listening for Scientific American-60-Second Science. I’m Christopher Intagliata.
1. What happened to Rafiq when he tracked Pavarotti?| A．He was lost in the woods. |
| B．He was trapped in a deep hole. |
| C．He found Pavarotti with tourists’ help. |
| D．He met Pavarotti on the way back to camp. |
| A．The photos are sources of information about wildlife. |
| B．The photos are mirrors of the wildlife researchers’ life. |
| C．The photos taken by tourists are of high quality. |
| D．The photos taken by tourists are especially beautiful. |
| A．The researchers have missed the data of cats. |
| B．The information from tourists’ photos was equally good. |
| C．The value of tourist photos hasn’t been proven. |
| D．Only the traditional methods can track wildlife. |
| A．On TV. | B．In a magazine. | C．On a radio. | D．In a book. |
8 . I have a special place in my heart for libraries. I have for as long as I can remember. I was always an enthusiastic reader, sometimes reading up to three books a day as a child. Stories were like air to me and while other kids played ball or went to parties, I lived out adventures through the books I checked out from the library.
My first job was working at the Ukiah Library when I was 16 years old. It was a dream job and I did everything from shelving books to reading to the children for story time.
As I grew older and became a mother, the library took on a new place and an added meaning in my life. I had several children and books were our main source (来源) of entertainment. It was a big deal for us to load up and go to the local library, where my kids could pick out books to read or books they wanted me to read to them.
I always read, using different voices, as though I were acting out the stories with my voice and they loved it! It was a special time to bond with my children and it filled them with the wonderment of books.
Now, I see my children taking their children to the library and I love that the excitement of going to the library lives on form generation to generation.
As a novelist, I’ve found a new relationship with libraries. I encourage readers to go to their local library when they can’t afford to purchase a book. I see libraries as a safe haven (避风港) for readers and writers, a bridge that helps put together a reader with a book. Libraries, in their own way, help fight book piracy (盗版行为) and 1 think all writers should support libraries in a significant way when they can. Encourage readers to use the library. Share library announcements on your social media. Frequent them and talk about them when you can.
1. Which word best describes the author’s relationship with books as a child?| A．Inseparable. | B．Uneasy. | C．Awful. | D．Casual. |
| A．Pleasure from working in the library. | B．A closer bond developed with the readers. |
| C．Fun from acting out the stories. | D．Joy of reading passed on in the family. |
| A．Give money to book fairs. | B．Write for social media. |
| C．Buy her novels. | D．Support libraries. |
| A．Reading: A Source of Knowledge | B．My Idea about writing |
| C．My Love of the Library | D．Library: A Haven for the Young |
9 . We have studied in Songpu High school for several months. When I first went into the school gate and saw my new classroom and teachers, I thought I would have a new start. The school life is very busy and exciting. There are many activities in our school, such as Sports Meeting, Science Week, Art Week and so on. We all take an active part in them. I have made many new friends and we often help and learn from each other in study.Our teachers have taught us a lot. They not only teach us how to study but also teach us how to be a useful person in society. They tell us which thing is worth doing.Habit is a second nature.Our teachers often remind us to form a good habit.
People often said: There is no royal to learning. Now I feel it is true. The study now is far more different than before. I often find there is something difficult to understand at once. At this time, you must spend a lot of time studying by yourself or you won't make progress. Of course study is hard but when you make progress you'll find it is interesting.
Our school is clean and beautiful. There are many trees and flowers around it.In order to make our school more and more beautiful we should try our best to keep it clean.
Today we are proud of Songpu. Tomorrow Songpu will be proud of us.
1. ________ is also important besides studying hard according to this passage.| A．Being a useful person | B．Good studying habit |
| C．Taking part in activities | D．Making progress |
| A．thankful | B．enthusiastic |
| C．loving | D．exciting |
| A．boring | B．harmonious (和谐的) |
| C．terrible | D．quiet |
| A．An Attractive School | B．My School Life |
| C．I Like My School | D．My Teacher |
10 . When he first rose to stardom in the NBA, Yao Ming could not possibly have known the influence he would have on the American understanding of China.
In the eyes of many Americans, Chinese are short, bookish, and not especially athletic. Yao, 26, has turned that image on its head. A giant at 2.26 metres, he has been the most talked-about player in the league since he topped the NBA draft（选秀）in 2002.
When Yao first joined the Rockets and struggled with an American style of basketball, many were quick to label（标记）Yao “a failure”. But Yao played on. He did not let the criticism affect his performance. Even when former NBA star Charles Barkley bet that Yao could not score more than 19 points in a single game, Yao kept his self-respect. The same cannot be said for Barkley, who was forced to kiss a real donkey’s ass（屁股）when Yao passed the 19-point mark early in his first season.
For Americans, Yao’s polite and friendly personality is a welcome contrast to the rude behaviour of the NBA’s bad boys. Compared with most other NBA players, Yao Ming is a true gentleman. He respects all of his opponents（对手）, even those who are not friendly to him.
“He is so wise and humourous that he seems like a diplomat（外交家）rather than a basketball player sometimes,” said Ron Burke, an NBA TV reporter.
In addition, Yao’s witty answers have changed the opinion that Chinese people are boring. When asked what were his favourite English words, Yao told the press that the five words were “This is the last question.” Yao is winning supporters within the league as well. After a Rockets-Lakers game that Shaquille O’Neal had to sit out with an injury, O’Neal said, “You played pretty good, Yao Ming.” Yao replied, “That’s because you weren’t there.”
1. What attitude do many people take with Yao Ming when he first joined the Rockets?| A．Friendly. | B．Doubtful. | C．Sincere. | D．Angry. |
| A．proved that he was athletic | B．passed the 19-point mark early |
| C．showed his politeness and friendliness | D．beat former NBA star Charles Barkley |
| A．Yao Ming was respectful and smart | B．Yao Ming was boring and proud |
| C．Yao Ming topped the NBA draft | D．Yao Ming wasn’t a failure any more |
| A．Yao Ming’s road to stardom. |
| B．The skills Ming showed in NBA. |
| C．Yao Ming’s competition with other NBA players. |
| D．The impact of Yao Ming on Americans’ attitudes towards Chinese. |
