摘要: Astronauts haven't found any living things on the moon, ? A) haven't they B) don't they C) have they D) do they

网址:http://m.1010jiajiao.com/timu3_id_2366769[举报]

If you knew a bottle of water had been recycled from urine (尿), would you drink it? Astronauts at the International Space Station (ISS) may soon do so. NASA (美国航空航天局) said it would use a high-tech machine (高科技机器) to recycle wastewater at the ISS. The machine will recycle everything from sweat (汗), the water for washing hands, shower water, water used for brushing teeth, and even urine, to make drinking water.

It will save NASA millions of dollars each year. At present, each ISS astronaut uses about 4.4 liters (升) of water every day. It costs about $24 million a year to transport water up to ISS. NASA says that a liter of water costs about $11,000.

The machine will be sent to the ISS in October 2008. NASA hopes it will recycle about 93% of all water used on the station. Will the water be clean? Scientists say the wastewater will go through a very complicated process (复杂的过程). For example, different chemicals will be put in the wastewater; the water will be heated to 130to get rid of bacteria (细菌). The recycled water is thousands of times better than the water from a city tap, scientists say.

1.NASA will use a high-tech machine to recycle wastewater at the ISS to __________.

A. protect the ISS

B. make astronauts at ISS work harder

C. provide better water and food for ISS astronauts

D. save the cost of transporting water up to the ISS

2.At present it costs NASA about ______ dollars to transport water up to an astronaut at the ISS a day.

A. 4.4 thousand B. 11 thousand

C. 48.4 thousand D. 24 million

3.Scientists plan to get rid of bacteria in the wastewater by ______.

A. freezing B. heating

C. shaking D. precipitating (沉淀)

4.The reading mainly tells us something about ______.

A. water recycling B. the International Space Station

C. a high-tech machine D. the cost of NASA

5. Which of the following sentences is true, according to the passage?

A. The recycled water is much better than that from a city tap.

B. The high-tech machine will recycle all the water used on the station.

C. At present, each ISS astronaut uses more water than the people living on the earth.

D. The high-tech machine can only recycle urine to make water at present

 

查看习题详情和答案>>
       Who hasn’t enjoyed eating peanuts? Did you know that although peanuts look like nuts and taste like nuts, they aren’t nuts at all? They belong to the pea family, so they are called peanuts. The peanut grows flowers above ground, but its “fruit” grows underground. It grows in more countries than most other “nuts”.
The peanut is a native South American plant. Scientists believe that it grew wild in Brazil long ago. They think that for several thousand years the early peoples of South America made it a part of their diet. These peoples were nomads who moved on when a natural food could no longer be found in one area. Along the way they probably let fall some peanuts, which got into the ground and grew. This is believed to be the way the plant reached the place where the Incas(印加人)lived. The Incas, from about 1100 to 1532, thought highly of peanuts. The peanuts were eaten in several forms and used as sacrificial offerings(祭品)to the Incan Sun God. Later in the 16th century, European soldiers had brought peanuts to other parts of the world, including North America, Africa, Asia, Europe, and Pacific Islands.
Although peanuts were found native in South America, they are now grown in almost every country that has warm weather. India produces the most peanuts. China’s production is next, followed by the United States.
The peanut is special in more ways than one. It can be eaten raw, boiled, roasted, or fried. Hundreds of widely different products have been made from it. Carver, an American scientist, set himself the task of discovering new uses for eating and for many other products.
Peanuts are very highly nutritious and are also high in protein (蛋白质). Americans use about seven-tenths of their protein in the form of meat. In India, where the poor can’t pay for meat or milk, peanut meal and peanut milk have been produced. These have been a great help to the poor.
New products are continually being made from peanuts, among them peanut cheese and a powder that becomes peanut butter when water is added. The fact is that peanuts are so healthy that they were used by astronauts. The unusual nut that isn’t a nut is one of nature’s most amazing gifts.
【小题1】 Although we like eating peanuts, many of us don’t know peanuts belong to _______ family.
A.the peaB.the nutC.both the pea and the nutD.neither the pea nor the nut
【小题2】 Which paragraph(段落)mainly talks about the history of the peanut?
A.Paragraph FourB.Paragraph Three
C.Paragraph TwoD.Paragraph One
【小题3】What does the underlined word nutritious mean?
A.Helpful for staying healthy.B.Helpful to the poor.
C.Delicious and tasty.D.Rich in fat and oil.
【小题4】 Which of the following is TRUE according to the article?
A.Nomads always stayed in the same place.
B.The peanut was first found in South America.
C.Astronauts ate lots of peanuts to keep healthy.
D.China grows fewer peanuts than the US.
【小题5】What is the purpose of the article?
A.To show that peanuts belong to the pea family.
B.To advise us to use more peanut products.
C.To tell us some new uses of peanuts.
D.To let us know more about peanuts.
查看习题详情和答案>>

SPACE is a lonely place. Hundreds of thousands of kilometers from home, astronauts have a hard life. It stands to reason that, once in a while, they need to have a good cry. But this is a lot harder than it sounds.

We still know very little about space, and about living in zero gravity. In fact, we are discovering new things every time astronauts take to the skies (and beyond). As The Atlantic reported in January, crying is not all that simple in space. This is because when a person normally cries,  gravity makes their tears move downwards. But in a spacecraft, this is not the case. Here, there is no gravity, which is why we so often see pictures of astronauts floating around. This means that, strangely, when you cry your tears have nowhere to go. As a result, they just stick to your eyes.

In May 2011, astronaut Andrew Feustel experienced this. “Tears,” as he said, “don’t fall off your eye… they just kind of stay there. ” This can be quite painful. In space, your eyes get very dry, and the added moisture is irritating (气人的). Sometimes, things get even weirder(更怪异的). The astronaut Ron Parise told The Atlantic that when tears get big enough, they “break free of the eye and float around”.

No one can be quite sure why we cry. Why should water in our eyes have anything to do with feeling sad? If you stop to think about it, crying is a very strange thing indeed. And now, thanks to the wonders of space, it just got even stranger.

1.The first paragraph mainly wants to tell us that       .

A.living in space is lonely

B.it’s easy to feel sad in space

C.it’s hard to cry in space

D.nobody wants to live in space

2.If astronauts cry in spacecraft, their tears will       .

A.move downwards                       B.move upwards

C.go out of the window                    D.stick to their eyes

3.Astronauts feel       if tears are always in their eyes.

A.sad              B.comfortable        C.happy            D.uncomfortable

4.What can we learn from the passage?

A.In space our eyes are very wet.

B.Tears will float around if they are big enough in space.

C.People know everything about living in zero gravity.

D.Gravity makes people’s tears move upwards in space.

 

查看习题详情和答案>>
There are few families in the United States that do not have either a radio or television set. Both of them have become a necessary part of our daily life, keeping us filled with the news of the day, teaching us in many fields of interest, and making us happy with singing, dancing and acting.
Marconl, the Italian inventor, who gave us the radio, probably didn’t know how much his great invention would have done for the world in the years to come. Radio had, perhaps done as much as any other communication tool. Things of the world can be reported to people everywhere a few seconds after they happen. Travelers in or out of–the–way places, ships at sea even astronauts round the earth are able to keep in touch with each other by radio.
Television is another important invention. It lets us see as well as hear the actor. Since its appearance, TV has done a great deal in the daily life of people everywhere. Many programs are now televised in color.
Perhaps the most modern invention is “Telstar”, a “star” moving round the earth. It makes it possible for the people all over the world to be closer than ever before. Now a family in Chicago can watch on TV a motor–car race in Italy, a table tennis competition in Beijing or a volleyball match in Japan as these events are actually happening!
【小题1】The passage tells us that __________ in the U.S.A. have no radio or television set.
A. few families   B. all the families    C. many families   D. a few families
【小题2】Who do you think the writer of the passage is?
A.An Italian. B.A Japanese. C.An American. D.A Chinese.
【小题3】Why does the passage say radio and TV have become a necessary part of our daily life?
A.Because they have touched nearly everything in our life.
B.Because men would not live happily without them.
C.Because they are the only ways to spread information.
D.Because no communication means no life.
【小题4】 What is a “Telstar” used to do according to the passage?
A.To receive and store information only.
B.To move around the earth just like the moon.
C.To give light onto the earth at night.
D.To help send out radio or TV information to the world.
【小题5】 When the writer introduces Marconl in the second paragraph, he means __________.
A.he was just an Italian inventor
B.his invention has done much for the world
C.he had reported much to people all over the world
D.he helped people travel a lot around the world
查看习题详情和答案>>

At 9 a.m. on October 15, 2003, our country launched (发射) its first manned (有人的) space-ship, Shenzhou V, into space at Jiuquan Satellite Launch Center in Gansu Province. It took Yang Liwei and his spaceship about 21 hours to circle the earth 14 times. Yang Liwei is China’s first astronaut. He comes from Liaoning Province, and he has been an air force pilot(飞行员) since 1983. He was chosen from 14 pilots after many difficult tests.

The life of an astronaut is hard to imagine for many people. To put on a space suit takes 15 minutes with the help of others. Sleeping in space is not easy, either. He has to sleep in a special sleeping bag on the wall because there is no gravity. Yang can eat chicken and rice. It’s especially made to eat in space but it doesn’t taste nice.

“I’m feeling very good in space, and it looks wonderful here,” said Yang, “I have looked at our beautiful earth and I have recorded all that I have seen here.”

China has become the third country in the world to send a person into space after the former Soviet Union(前苏联) and the United States. China is now planning its next launch. Shenzhou VI will be into space within(在……之内) the next years, it may take three astronauts. We are all proud of our motherland.

1.Shenzhou V was launched into space _____.

A.at 9 a.m. on October 15, 2003

B.at 9 p.m. on October 15, 2003

C.at 9 a.m. on October 16, 2003

D.at 9 p.m. on October 16, 2003

2.Yang Liwei is a(n) ______.

A.policeman

B.businessman

C.doctor

D.astronaut

3.Yang Liwei is from _______.

A.Liaoning

B.Gansu

C.Jining

D.Inner Mongolia

4.Which of the following is true?

A.It took Yang Liwei and his spaceship about 12 hours.

B.Life in space is easy for an astronaut.

C.China is planning its next launch now.

D.Yang Liwei is the first man into space.

5.We can know there are _____ countries in the world which can send man into space.

A.five

B.four

C.three

D.two

 

查看习题详情和答案>>

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网