游客
题文

Life in space will certainly take some getting used to!But the space station has been designed to keep the astronauts as comfortable as possible—the modules(舱) are roomy,bright,and kept at a constant 70 degrees Fahrenheit.It’s important the crew members are comfortable because they’ll be busy aboard the station.In a typical workday,crew members will spend 14 hours working and exercising,1.5 hours preparing and eating meals,and 8.5 hours sleeping.Here are some other fun facts about life aboard the station:
Food
Come mealtime,astronauts will have a special dining kitchen.Space food just keeps getting better—and more like food we enjoy here on Earth.In early space missions,astronauts could eat only freezedried food that didn’t require any preparation.But the space station is equipped with water,microwave ovens,and refrigerators,allowing the folks on board to eat more “normal” types of food,including fruit,vegetables,and ice cream!
Sleep
Each crew member has a private room.With no gravity,they’ll need to tie themselves to their beds,or they will float away!That might sound like a strange way to sleep,but astronauts from past space missions report that sleeping in space is actually pretty great!
Exercise
You might not think it,but exercise is even more important on the station than it is on Earth.There is not much gravity in space.Astronauts don’t stand up,sit down or walk in space,so their muscles and bones don’t have to work much—and this muscle and bone loss can be dangerous back on Earth.To fight this,astronauts on the station will exercise on bikes,rowing machines,and other equipment about two hours every day.
Clothing
Astronauts will have to wear special space suits while traveling aboard the U.S.shuttle or Russian rockets.But once they’re safe inside the space station,crew members can wear regular clothing.Of course,a specially designed,pressurized space suit is required for space walks.It has to withstand(经受住) flying pieces and protect the astronauts from dramatic temperature changes.It can range from 120 degrees below Fahrenheit in the shadow of the station to 250 degrees in the hot sun.
Personal Cleanliness
Simple tasks like brushing your teeth can be challenging in a weightless environment.A little water doesn’t flow in a stream—it suspends in a bubble!Astronauts will use a freshwater hose(软管) to take showers,shampoo,and wash off—then a second vacuum hose to suction(吸) off the dirty water.And how do you go to the bathroom in space?With a special “air toilet” that uses flowing air instead of water to dispose of waste.
The facts about life in space are all mentioned EXCEPT ________.

A.clothing B.entertainment
C.sleep D.exercise

What can be learned from the paragraph “Clothing”?

A.The temperature is quite different in different places in space.
B.Astronauts must wear special space suits all the time in space.
C.Astronauts can wear regular clothing for space walks now.
D.Astronauts wear pressurized space suits just to keep warm.

Why is exercise more important in space than on earth?

A.It can make astronauts feel relaxed in space.
B.It can help astronauts spend their spare time happily.
C.Astronauts’ lives are more important in space than on earth.
D.It can prevent astronauts from causing muscle and bone loss.

What do we know about space food from the text?

A.Astronauts could eat apples in space in the past.
B.Astronauts eat only fruit,vegetables and ice cream now.
C.Fresh food isn’t available to astronauts in space.
D.Space food is getting better now than before.
科目 英语   题型 阅读理解   难度 中等
登录免费查看答案和解析
相关试题

We’re all connected. You can send an e-mail message to a friend, and your friend can pass it on to one of his or her friends, and that friend can do the same, continuing the chain. Eventually, your message could reach just about anyone in the world, and it might take only five to seven e-mails for the message to get there.
Scientists recently tested that idea in a study involving 24,000 people. Participants had to try to get a message forwarded to one of 18 randomly(随意地,随机地) chosen people. Each participant started by sending one e-mail to someone they knew. Those who received it could then forward the e-mail once to someone they knew, and so on.
Subjects, who were randomly assigned by researchers from Columbia University in New York, lived in 13 countries. They included an Australian police officer, a Norwegian veterinarian, and a college professor.
Out of 24,000 chains, only 384 reached their goal. The rest petered out, usually because one of the recipients was either too busy to forward the message or thought it was junk mail.
The links that reached their goal made it in an average of 4.05 e-mails. Based on the lengths of the failed chains, the researchers figured out that two strangers could generally make contact in five to seven e-mails.
The most successful chains relied on casual acquaintances rather than close friends. That’s because your close friends know each other while your acquaintances tend to know people you don’t know. The phenomenon, known as the strength of weak ties, explains why people tend to get jobs through people they know casually but aren’t that close to.
So, start networking and instant messaging now. As they say in show business: It’s all about who you know.
If you want to get into touch with a stranger in the world, how many e-mails might it take for the message to reach him/her?

A.5 to 7 B.18 C.13 D.384

Who does the word “subjects” refer to in the passage?

A.the 384 participants who lived in Australuia
B.the Norwegian veterinarians and college porfessors
C.the 24,000 people randomly assigned by reaearchers
D.the 18 people randomly chosen from 13 countries

What does the phrase “peter out” mean in the fourth paragraph?

A.die out B.pass away C.disappear D.pick out

Why do people tend to get jobs more easily through casual acquaintances than close friends?

A.Because close friends don’t talk with each other so much.
B.Because casual acquaintances can help you know more people and make more friends.
C.Because close friends don’t spend so much time gathering together.
D.Because casual acquaintances are kinder and more willing to help others.

In which part of a newspaper will readers read this passage?

A.Culture B.Entertainment C.Information and Technology D.Health

YOUR mom might cook a bowl of noodles for you on your birthday. But in the US, a mom makes a cupcake for her children on their birthday.
Cupcakes are small, round cakes topped with frosting (糖霜). It has been an American tradition that moms bring cupcakes to the classroom to celebrate their child’s birthday.
But recently some doctors have called for this to be banned. They believe cupcakes contribute to child obesity.
Despite their good intentions, however, some people believe that experts are interfering (妨碍) with American culture. The cupcake is seen as American as apple pie — only prettier.
According to Marion Nestle, a professor of nutrition at New York University, the cupcake is the most democratic (民主的) of desserts. As they are small enough for one person, you don’t have to share your cupcake with anyone — it’s all yours. They are also all the same size, so there can’t be any cries of “she got the bigger piece!”
Each bite can taste different depending on how much icing you have. It is a lesson in self- determination. Some people eat only a little of the frosting every time, others have it all in just one bite.
In recent years, eating a cupcake has become as trendy as having a cup of Starbucks coffee.
Democratic presidential candidate Hillary Clinton jokingly promised on a talk show that if she was elected president, she would give everyone a cupcake on her birthday.
Ruth Reichl, editor-in-chief of Gourmet magazine, explains that the rise of the cupcake is very much about going back to American national identity in food, which is all about comfort. “People want to think about when they and their country were innocent,” she said.
According to the passage, it has been an American tradition that ___________.

A.the family holds a party for children on their birthday
B.a mom cooks a bowl of noodles for her children on their birthday
C.a mom makes a cupcake for her children on their birthday and brings it to the classroom
D.parents go travelling with their children on their birthday

Why do doctors ask people to ban cupcakes on children’s birthday?

A.Because they themselves don’t like cupcakes.
B.Because they think cupcakes are not so delicious.
C.Because they believe cupcakes will cause cries of “She got the bigger piece”.
D.Because they believe cupcakes are one of the causes to make children become fat.

What cannot be inferred according to Marion Nestle?

A.The cupcake is more democratic than any other desserts in the US.
B.The cupcake is too small to share with others.
C.The sizes of cupcakes are the same so it’s equal to everyone.
D.Cupcakes will lead to child obesity so they should be banned.

The underlined word “trendy” in paragraph 7 probably means ________.

A.popular B.gentle C.delicious D.different

Why did the writer mention Hillary Clinton and Ruth Reichl?

A.To arouse the readers’ attention to banning the tradition of making cupcakes.
B.To show that cupcakes are becoming a popular way to show kindness and comfort.
C.To make a comparison between them in order for readers to remember them.
D.To give readers some idea of cupcakes so as to better understand the American culture

A few days ago I asked my sons’ governess Julia to come into my study.
“Be seated, Julia,” I said. “Let’s settle our accounts. I guess you most likely need some money, but maybe you’re too polite to mention it. Now then, we agreed on thirty dollars a month...”
“Forty.”
“No, thirty. I made a note of it. I always pay our governess thirty. Well, hmm, you’ve been here two months, so...”
“Two months and five days.”
“Exactly two months. I made a special note of it. That means you have sixty dollars coming to you. Take off nine Sundays... You know you didn’t work with Tom on Sundays. You only took walks. And three holidays...”
Julia was biting her finger nail nervously, her face red, but—not a word.
“Three holidays, therefore take off twelve dollars. Four days Tom was sick and there were no lessons, as you were occupied only with Dick. Three days you had a toothache and my wife gave you permission not to work after lunch. Twelve and seven—nineteen. Take nineteen off...that leaves...hmm...forty one dollars. Correct?”
Julia’s left eye reddened with tears welling up. Her chin trembled;she coughed nervously and blew her nose, but—still not a word.
“Around New Year’s Day you broke a teacup and a saucer: take off two dollars. The cup cost more, it was a treasure of the family, but—forget it. When didn’t I take a loss?! Then, due to your carelessness the maid stole Dick’s shoes. You ought to watch everything! You get paid for it. So, that means five more dollars off. The tenth of January I gave you ten dollars.”
“You didn’t,” sobbed Julia.
“But I made a note of it.”
“Well...if you say so.”
“Take twenty seven from forty one—that leaves fourteen. ”
Both her eyes were filled with tears. Beads of sweat stood on the thin pretty little nose. Poor girl!
“Only once was I given any money,” she whispered, her voice trembling, “and that was by your wife. Three dollars, nothing more.”
“Really? You see now, and I didn’t know that! Take three from fourteen...leaves eleven. Here’s your money, my dear. Three, three, three, one and one. Here it is!”
I handed her eleven dollars. She took them and pocketed them.
“Merci(法语,谢谢),” she whispered.
I jumped to my feet and started pacing the room. I was overcome with anger.
“For what, this ‘merci’?”I asked.
“For the money.”
“But you know I’ve cheated you—robbed you! I have actually stolen from you! Why this ‘Merci’?”
“In my other places they didn’t give me anything at all. ”
“They didn’t give you anything? No wonder! I played a little joke on you, a cruel lesson, just to teach you...I’m going to give you all the eighty dollars! Here they are in the envelope all ready for you...Is it really possible to be so spineless(懦弱)? Why didn’t you protest? Why were you silent? Is it possible in this world to be without teeth and claws(爪)—to be such a fool?”
Embarrassed, she smiled. And I could read her expression: “It is possible.”
I asked her pardon for the cruel lesson and, to her great surprise, gave her the eighty dollars. She murmured her little “merci” several times and went out. I looked after her and thought: “How easy it is to crush the weak in this world!”
While talking to Julia, the writer expected ____________ from her.

A.protest B.gratitude C.obedience D.an explanation

What shocked the writer was Juila’s ____________.

A.nervousness in front of her boss B.acceptance of injustice
C.shyness when talking about money D.unwillingness to express herself

The writer said, “Is it possible in this world to be without teeth and claws?” He was actually telling the governess _______.

A.to be more aggressive B.to be more careful in her work
C.to protect her own right D.to live independently

At the end of the story, the writer said “How easy it is to crush the weak in this world!” to show __________.

A.his understanding of Julia’s anxiety
B.his worry about Julia’s future
C.his concern on the living conditions of working-class people
D.his sympathy for the mental state of those exploited(被剥削的)

From the story, we can tell that Julia’s employer was ____________.

A.greedy but honest B.ill-tempered but warm-hearted
C.strict but forgiving D.honest, kind and worried

In many societies, there is often greater acceptance of light skin than dark skin. Light skin may be seen as a mark of beauty, intelligence and success. These beliefs can lead to social pressures even within the same racial or ethnic group, if some members are darker skinned than others.
The result is that skin lightening has become a common activity across Africa, Asia and other areas of the world. More and more people with dark skin are using skin-lightening products, even if it means they may face health risks.
They believe that having whiter skin will improve their lives. Many people think they will have a better chance of getting a job or marrying into a better family. Or they want to look like what their society generally considers beautiful.
Some beauty care products and soaps contain chemicals that make skin lighter. This is also called bleaching. But some of the chemicals are extremely dangerous. One of the most dangerous is hydroquinone(对苯二酚).
Hydroquinone has been banned in several countries. This chemical has been connected to kidney damage and some kinds of cancer. It also causes low birth weight in babies when mothers –to-be use it during pregnancy.
At first, bleaching products make the skin color lighter. But after long-term use they can cause problems. They could even make some skin darker.
The chemicals in the products block and break down the natural process that gives color to skin. The skin loses its natural barrier(障碍)to protect against sunlight. Then the skin can become thick and discolored. Usually the person will use more of the product in an effort to correct the problem, but this only makes it worse.
Fatimata Ly treats skin conditions in the Senegalese capital, Dakar. Doctor Ly says skin bleaching has become a problem throughout Senegal. She says the chemicals are now more dangerous because they are stronger. Some cases have resulted in blackened fingernails, infections and permanent(永久的)skin damage.
And these are not the only risks. Experts say some people who change their skin color suffer emotional damage. They feel regret and sadness. They feel that instead of risking their health, they should have learned to love and accept their skin color as it was.
What is the text mainly about?

A.The advantages of light skin B.Introducing skin lightening products
C.The harmfulness of Hydroquinone D.The health risks of bleaching

What does the underlined word “bleaching” refer to?

A.The process of removing the color
B.The process of making the skin whiter
C.The chemicals that make things white
D.The chemicals that protect skin against sunlight

Why do people want to make their skin lighter?

A.Because they all want to look more beautiful.
B.Because they all want to marry into better families.
C.Because they want to find better jobs.
D.Because they want to improve their lives.

Skin bleaching may cause the problem of ______.

A.emotional problems B.kidney cancer C.lighter skin D.low birth rate

The author holds a/ an ______ attitude towards skin lightening.

A.positive B.negative C.supportive D.optimistic

DNA is one of the most important discoveries in science. DNA is the plan for the human being, as a blueprint is the plan for a building. DNA makes a person look the way he does. A person’s DNA comes from a mixing of his parents’ DNA. That’s why a child looks like his parents. But, besides controlling things such as height and hair color, DNA can also give people diseases. Scientists are now studying DNA to cure diseases.
In the seventies, scientists developed a process called recombinant or RDNA. Although it sounds difficult to understand, RDNA simply means taking DNA from one animal or plant and putting it into another. By doing so, scientists can create new beings. In doing so, scientists can better understand DNA, especially what parts of DNA do what. After they understand DNA, scientists can begin to cure diseases. Often, the new being created will itself be the cure.Besides curing diseases, RDNA research can also do other things. For example, scientists in Japan have already created “super-trees”. Trees help humans, because they take CO2, which poisons humans, from the air and turns it into oxygen, which lets humans breathe. “Super-trees” do this too, but do it much faster. As things such as cars and factories have already put much CO2 in the area, “super-trees” are badly needed.
Unfortunately, there is a serious danger in RDNA research. Scientists want to create animals to cure old diseases, but these new animals may also create new diseases. It will be a serious problem if the animals escape from the science laboratory and into nature. As these animals are not natural, they may let loose many new powerful diseases.
As a result, RDNA research will create many solutions, but it will also create many problems.
From the passage, we can know that a boy looks like his parents because______.

A.he is son of his parents.
B.his parents’ DNA decides his appearance.
C.he has received DNA from his father or his mother.
D.scientists have put some of his parents’ DNA into him.

What does the underlined expression “let loose” probably mean?

A.let … go free B.get rid of
C.absorb D.survive

What is the best title for the passage?

A.The DNA Research in Japan
B.A New Way of DNA Research in Japan.
C.The Causes and Effects of DNA Research
D.The Advantages And Disadvantages of RDNA

The following statements are true about RDNA research EXCEPT ______.

A.the research has been stopped because the created animals carry viruses
B.“super-trees” might be widely planted around the world
C.scientists have not completely understood DNA
D.RDNA research will benefit human beings a lot

You might find this passage in / on a ________.

A.fashion magazine B.novel C.scientific newspaper D.sports newspaper

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号