BEING an astronaut sounds cool, doesn't it? In space, they get to do some pretty amazing things, like floating in zero gravity(重力).
However, there are also plenty of things that astronauts can't do because of their weightless environment, and that's very sad. What's worse, they can't even let their sadness show, because it's impossible to cry in zero gravity.
Of course, astronauts can still produce tears. But crying is much more difficult in space, according to The Atlantic(大西洋月刊) in January. Without gravity, tears don't flow(流动) down out of the eyes like they do here on Earth. This means that when you cry in space, your tears have nowhere to go-they just stick(粘) to your eyes.
In May 2011, astronaut Andrew Feustel experienced this during one of his spacewalks. "Tears," he said, "don't fall off of your eyes...They just kind of stay there."
Besides making your vision(视线)unclear, this can also cause physical pain. Back on Earth, tears are supposed to bring comfort to the eyes. But that's not the case in space. The space environment dries out astronauts' eyes, and when tears suddenly wet the eyes, it can cause pain rather than comfort. "My right eye is stinging(刺痛) like crazy," Feustel told his teammate during the walk.
Since gravity doesn't work in space, astronauts need some extra help to get rid of（除去） the tears. Feustel chose to rub his eyes against his helmet to wipe(擦) the tears away. Another choice is to just wait-"When the tears get big enough they simply break free of the eyes and float around," astronaut Ron Parise told The Atlantic.
There are lots of small things-things like crying-that we are so used to on Earth. We usually take them for granted until they become a problem in a totally different environment, like space. There, astronauts can't talk to each other directly. They also can't eat or drink in normal ways. They can't even burp (打嗝), because there is no gravity to hold the food down in their stomach. If they do burp, they just end up throwing up（呕吐）everything in their stomach, according to the UK National Space Center.
Therefore, perhaps it's only space explorers who can honestly say: "Gravity, you're the best."From Paragraphs 2 and 3 , we can know that_______.
| A．astronauts are unable to feel sad in space |
| B．astronauts produce fewer tears in space |
| C．tears produced in space flow down more slowly |
| D．tears produced in space don't flow downward |
What effect do tears have on astronauts?
| A．They cause physical pain. |
| B．They bring comfort to them. |
| C．They make their vision clearer. |
| D．They float around and cause trouble. |
The underlined phrase "take them for granted" in paragraph 7 means _______.
| A．find them important |
| B．consider them useless |
| C．need them during an emergency |
| D．fail to notice their presence(存在) |
The second-to-last paragraph (paragraph 7) is mainly about_______.
| A．suggestions of how astronauts can stay comfortable in space |
| B．other basic things that are difficult to do in space |
| C．why burping is impossible in space |
| D．things human can't do without gravity |
阅读理解
American people like to say “Thank you” when others help them or say something kind to them. People of many countries do so, too. It is a very good habit.
You should say “Thank you” when someone passes you the salt on the table, when someone walking in front of you keeps the door open for you, when someone says you have done your work well, or you have bought a nice thing, or your city is very beautiful. “Thank you” is used not only between friends, but also between parents and children, brothers and sisters.
“Excuse me” is another short sentence they use. When you hear someone say so behind you, you know that somebody wants to walk past you without touching(触摸) you. It’s not polite(礼貌) to break (打断) others when they are talking. If you want to speak to one of them, say “Excuse me” first, and then begin talking. You should also do so when you begin to cough(咳嗽) or make any noise before others.
Let’s learn to say “Thank you” and “Excuse me”.You should say “Thank you” when _____.
| A．you say something kind to others |
| B．you help others |
| C．someone helps you |
| D．you need others to help you |
From the passage we know “Thank you” is ______ .
| A．widely used in the world |
| B．used more often than “Excuse me” |
| C．used only by Americans |
| D．used only between friends |
You should say “Excuse me” if you want to _____ .
| A．cough | B．make some noise |
| C．go first | D．all of the above |
When you are going to ask someone to tell you the way, you should say “_____”.
| A．Thank you | B．That’s very kind of you |
| C．Excuse me | D．I’m sorry |
This passage mostly tells us the way ____.
| A．to be happy | B．to be polite |
| C．to help others | D．to learn from Americans |
阅读理解
Born in Texas（得克萨斯州）in 1893,Bessie Coleman drew she wanted to do something exciting with her life．Then Coleman saw her first airplane, and she knew she wanted to fly．But no school would teach her because she was a woman and a black woman．So Coleman went to Europe．At the age of twenty-eight, she became the world's first black woman to hold a pilot's license（拥有飞行驾照）．Then she went home to fly in air shows（飞行表演）．Soon she was called “Brave （勇敢的）Bessie．”Bessie Coleman had wanted to open a flying school for black women．Sadly, she never saw her dream come true．She was killed in a plane crash．But Coleman is still remembered today．A group of black flies call themselves the “Bessie Coleman Aviators．The best title is__________．
| A．Learning to Fly | B．The First Black Woman Pilot（飞行员） |
| C．Air Show of Long Ago | D．How Women Learned to Fly |
Bessie Coleman was born in__________．
| A．Texas | B．Europe | C．New York | D．Washington |
The best word to describe（形容）Bessie Coleman is__________．
| A．careful | B．daring （胆大的） | C．quiet | D．Texan |
The best “aviators” means__________．
| A．teachers | B．doctors | C．fliers | D．fighters |
Which of the following sentences is not true?
| A．Bessie Coleman learned how to learn flying Europe． |
| B．Bessie Coleman began to learn flying in 1893． |
| C．Bessie held a pilot's license when she was twenty-eight． |
| D．Bessie didn't see her dream come true． |
阅读理解
根据短文判断正(T)误(F)
A boy named Jack lived in a small village. One morning, his mother sent him to his uncle's in town. He had a very good time there. Before Jack left in the evening, his uncle gave him a jar and said, “There is some candy in it, you may put your hand into it and take some when you want to eat something.” Jack looked at the jar when he was in the train. It had a long and small neck. He put his hand into the jar and took five pieces. But he could not get his hand out. He turned his hand this way and that way, still he could not get his hand out. He turned his hand again. Finally he let go of four pieces. Then he could pull his hand out of the jar.One day Jack's mother sent him to his mother's brother's house.
The jar with some candy in it had a large neck.
Jack only stayed in town for a whole day.
At last Jack only took one piece of candy at a time.
From this lesson, Jack knew that he himself was too foolish.
Mobile phones and the Internet have improved our life in many ways. However, along with improvements, they also brought a number of worrying problems.
Many car accidents are caused by mobile phones. You can use many new mobile phones to get on the Internet .This can be very convenient, but some drivers get on the Internet while driving. Driving needs all our attention. By looking at their mobile phones and not at the road, these insensitive(不专注的) drivers are a danger to us all.
Many of the dangers of the Internet are well known. Children who visit websites without their parents’ permission sometimes talk to older people they don’t know and put themselves in great danger. People with blogs(博客) sometimes post（张贴） embarrassing photographs of people they don’t know on their websites without permission. There are also people who use the Internet to get personal information that we do not want them to have.
Mobile Phones and Internet Safety Tips
lIf you need to use a mobile phone when you drive, use a “hand –free” phone.
lIn difficult driving situation such as rain or snow, don’t use your phone at all.
lDo not make very important phone calls while driving. They take your attention off the road.
lTell your children not to talk with anyone they do not know on the Internet.
lIn an embarrassing situation, pay attention to people around you. People will be shy about taking your picture if they know you’re paying attention.
lRefuse to give out any personal information on the Internet.Which of these dangers of mobile phones or the Internet is NOT mentioned in the passage?
A.You can have a car accident
B.Someone can post your photograph on the Internet
C.Someone you do not know can call youChildren should ______ on the Internet.
A.give out their important personal information
B.talk to older people they don’t know
C.ask for their parents’ permission sometimes to visit some websitesA “hand-free” mobile phone is probably a mobile phone that _____.
A. is free to use
B. can be used without your hands
C. can be used with only one handWhat advice is given in the passage to stop someone from taking an embarrassing picture of you?
A.Pay attention to the people around you
B.Don’t give out your personal information
C.Use a “hands-free” mobile phoneWhich is the best title of the passage?
A.Internet Problems
B.Mobile Phone and Internet Dangerous
C.The Development of Mobile Phone and Internet
A few years ago, Dave Stirling had the idea of selling CDs over the Internet. The business he started from his home in Ohio, the USA, now sells 500,000 CDs a year and has made him into a millionaire(百万富翁)at the age of 24.
“I could see that this was the future of shopping,” says Stirling. “Why should you pay $15 for a CD and spend the time and the money getting into the store and parking your car? You can have the same CD for half of the price by clicking(敲击)on your computer. And we can find any CD you want and bring it to your door in 24 hours!”
According to Stirling, this is the only beginning, “I believe that one day we’ll do our shopping over the net: it’s easier, quicker and cheaper. Shops and supermarkets will be the past.”Dave Stirling started his business from _____
A. his home B. His company C. the officeHow has Stirling become so rich ?
A. By making ice cream.
B. By making advertisements.
C. By selling CDs over the Internet.If you pay $15 for a CD in the store, how much should you pay for it over the net?
A. $15 B. $12 C. $7.5By shopping over the net, you won’t _______________.
A. spend the time and the money
B. click on your computer
C. get into the store by yourselfWhat can we learn from the passage?
A. More than half of the Americans prefer to shop over the net.
B. Shops and supermarkets will be the past in the future.
C. It’s easier, quicker and more expensive to do our shopping over the net.