題目列表(包括答案和解析)
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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 (美國航空航天局)said it would use a high -tech machine (高科技機器) 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 (復雜的過程).For example, different chemicals will be put in the wastewater; the water will be heated to 130℃ to get rid of bacteria (細菌).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(chǎn) 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.
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A.Smoking , drinking and exercising. |
B.Drinking, fighting and playing. |
C.Smoking, drinking and fighting. |
D.Chatting, watching and smoking. |
A.The program of hurting screens. |
B.The program of protecting screens |
C.The program of using screens less. |
D.The person who uses screens less. |
A.By using spyware. | B.By not going online. |
C.By getting others into trouble. | D.By being happy. |
A.Happy but safe surfing. | B.Don’t comment on the Internet. |
C.Warning about downloads. | D.Activities on the websites. |
How much paper do you use every year? Maybe you can't answer this question quickly. In 1990, the world's use of paper was about one kilogram for each person in a year. Now some countries use as 50 kilograms of paper for each person in a year. But countries like America, England and Sweden, certainly use more paper than other countries.
Paper was first made in China about 2000 years ago. It was made from the hairlike parts of certain plants. Paper was not made in southern Europe until about the year 1100. In 1500, a German named Schaeffer found out that one could make the best paper from trees. After that, the forest countries of Canada, Sweden, America and Finland became the most important ones in paper making.
When we think of paper, we think of newspapers, books and writing-paper. But there are many other uses. Only half of the paper is used for books and magazines. Paper is very good for keeping you warm. You may see some people asleep on a large number of newspapers. They're insulating themselves from the cold. In Finland the temperature is sometimes --40 centigrade
(攝氏). The farmers wear paper boots in the snow. Nothing could be warmer.Each year more and more things are made of paper. We have had paper cups and plates for a long time. Now we hear that chairs, tables and even beds can be made of paper. With paper boots and shoes, you can wear paper hats, paper dresses and paper raincoats. When you have used them once, you throw them away and buy new ones.
People have made paper boats, but they haven't made planes or cars. Just wait--they perhaps will some day.
Choose the best answer.
(1) ________ use more paper than other countries.
[ ]
A .Sweden |
B .America |
C .England |
D .A, B and C |
(2) When was paper first made in southern Europe?
[
]
A .2000 years ago. |
B .In 1100. |
C .In 1500. |
D .In 1900. |
(3) Why do farmers in Finland wear paper boots in the snow? Because_______________.
[
]A
.they are so poor that they can buy only paper bootsB
.there are no other kinds of boots thereC
.paper boots are warmer than anything else thereD
.paper boots are so nice that they don't like other kinds(4) Paper has been used for making___________.
A .planes |
B .cars |
C .motorcycles |
D .lots of things |
(5) When you have used some things that are made of paper once, you_________.
A
.throw them away and buy new onesB
.keep on using themC
.give them to your friendsD
.wait to use them sometime later湖北省互聯(lián)網(wǎng)違法和不良信息舉報平臺 | 網(wǎng)上有害信息舉報專區(qū) | 電信詐騙舉報專區(qū) | 涉歷史虛無主義有害信息舉報專區(qū) | 涉企侵權舉報專區(qū)
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