known by the general public. For example, at many public exhibitions about energy, SPS is not
even mentioned. This is mainly because very little money has been spent on SPS research
There are people who claim that SPS is unrealistic - because launch costs are much too high
today; or because it is too far away. So why do we believe that it is important to continue to do
researches on SPS? The reason is very simple.
Humans are going to need huge amounts of electric power in coming decades. Within 50 years
the world population is expected to double, while economic growth will continue around the world,
especially in the poorer countries. But existing energy sources already face serious problems. They
are limited; they are polluted; they are dangerous. So 50 or 100 years from now, where is our power
going to come from? Nobody knows. And so we believe that new large-scale possibilities should be
studied further.
We must remember that humans have some choices concerning our future. To some extent we
can choose the direction in which our civilization develops. And choices that are made in the coming
decades-such as the energy sources that we will or will not use, will have major, long-term meaning
for human life on earth. We believe that if research continues to show that SPS is environmentally and
economically attractive, SPS will open the door to a much more attractive future for human civilization
than any ground-based energy source, and one that the public will support and that young people will
find challenging and exciting. Furthermore energy from SPS can be readily used in developing countries,
as the SPS 2000 project will show, thus aiding economic development worldwide. In addition, by
creating large commercial fund for space engineering, SPS will open the frontier of space to economic
development, thus creating a limitless new field for the growth of the world economy.
B. The Concept of SPS
C. Humans and SPS
D. Advantages of SPS
B. The research is showing SPS can benefit environment and economy at present.
C. The energy from SPS is now being used in some developing countries.
D. The public don"t know about SPS because little time is devoted to the research.
B. where to get energy sources in the future
C. the importance of controlling world population
D. the need to explore new energy sources
B. Put the cart before the horse
C. One man"s meat is another man"s poison
D. Easier said than done
When a cat is frightened,its heart starts beating faster,its muscles get tense,and there are changes in
the chemicals in its blood- stream.
Although the cat doesn"t 1 this,its body is getting ready for action.
If the danger continues,this animal will do one of the two things .It will 2 itself,or it will run
away as fast as it can.
3 ,when people are excited,angry,scared,or aroused by other emotions,our bodies also go
through many 4 changes. Our hearts beat faster,and our muscles get tense. All of these changes
make us more alert and ready to react. We,too,get ready to defend ourselves 5 run.
Human beings, 6 ,have a problem that animals never face. If we give way to our feelings and
let them 7 ,we can get into trouble. Have you ever said something in anger,or hit somebody and
regretted it later? Have you ever shouted at a teacher,told someone you were lonely,or said you were
in love,and then 8 later you had kept your mouth shut? It isn"t always 9 to express your feelings
freely.
Does this mean that it"s smarter always to 10 our feelings? No! If you 11 feelings of anger,
sadness,and bitterness hidden away or bottled up inside,your body stays 12 .Physical illnesses can
develop It can actually be 13 for your health.
Feelings that you keep all bottled up inside,don"t just 14 .It"s like you bought some bananas and
stuck them in a cupboard. You might not be able to see them,but 15 you"d smell them. And if you
opened the cupboard,you"d 16 little fruit flies hovering (盘旋) all over them. They"d be rotten.
You can try to treat emotions 17 they were bananas in the cupboard. You can 18 they don"t
exist, but they"ll still be 19 .And at last you"ll have to 20 them. Just like those bananas.
( ) 1. A. mind ( ) 2. A. save ( ) 3. A. Truly ( ) 4. A. physical ( ) 5. A. or ( ) 6. A. therefore ( ) 7. A. take off ( ) 8. A. hoped ( ) 9. A. useful ( )10.A. handle ( )11.A. find ( )12.A. tense ( )13.A. harmful ( )14.A. go on ( )15.A. long before ( )16.A. meet ( )17.A. just as ( )18.A. expect ( )19.A. around ( )20.A. deal with | B. admit B. help B. Frequently B. chemical B. and B. but B. take on B. wished B. right B. hurt B. keep B. relaxed B. good B. go away B. as usual B. observe B. as if B. pretend B. in B. eat up | C. remember C. hide C. Differently C. health C. but C. however C. take up C. blamed C. wise C. prevent C. control C. same C. helpful C. go up C. right away C. see C. just after C. decide C. over C. throw away | D.realize D.defend D.Similarly D.ill D.yet D.besides D.take over D.shared D.easy D.hide D.let D.different D.useful D.go out D.before long D.catch D.even though D.assume D.beyond D.send out | ||||||||
阅读理解。 | |||||||||||
Introductory Chemistry was taught at Duke University for many years by professor Bonk. One year,two guys took the class and did pretty well on all the quizzes and mid terms. They each had a solid A. These two friends were so confident in going into the final that the weekend before finals week,despite the Chemistry final being on Monday,they decided to go to the University of Virginia to party with some friends. They had a great time there. However,with their hangovers(宿醉) and tiredness,they overslept all day Sunday and didn"t make it back to Duke until early Monday morning. Rather than taking the final then,they found professor Bonk after the final and explained to him how they missed the final. They told him they went up to the University of Virginia for the weekend and had planned to come back in time to study,but they had a flat tire on the way back and didn"t have a spare. So they were late getting back to campus. Bonk thought this over and agreed that they could take the final the following day. The two guys,happily and relieved,studied that night and went in the next day at the time that Bonk had told them. He placed them in separate rooms and handed each of them a test booklet. He told them to begin. They looked at the first problem which was something simple about solution(溶解).It was worth 5 points. "Cool," they thought,"this is going to be an easy final". They then turned the page. They were unprepared,however,for what they saw on it. The question contained only two words: (95 points) Which tire? | |||||||||||
61.The two guys decided to go to the University of Virginia because . | |||||||||||
A. they were afraid of the final B. there was a party there C. they thought they can pass the final easily D .the final would be held there | |||||||||||
62.When did they take the final at last? | |||||||||||
A. On Sunday. B. On Monday. C. On Saturday. D. On Tuesday. | |||||||||||
3.From the passage we know . | |||||||||||
A. the two guys came back to campus late on purpose B. Bonk wasn"t strict with the two guys C. Bonk didn"t believe the two guys" explanation D. repairing the flat tire took the two guys a lot of time | |||||||||||
4.After the final,they . | |||||||||||
A. must have the same scores B. may apologize to professor Bonk C. wouldn"t be confident in their Chemistry D. would feel happy and relieved | |||||||||||
5.From the passage we can get a lesson that . | |||||||||||
A. he is wise that is honest B. he who makes no mistakes makes nothing C. one never loses anything by politeness D. think twice before you do | |||||||||||
阅读理解。 | |||||||||||
Both warm-blooded and cold-blooded desert animals have ways to escape the desert heat. | |||||||||||
1. Desert animals are usually more active at night because _____. | |||||||||||
A. it is cooler at night B. it is easier to find water C. they like the dark D. they are less likely to be attacked at night | |||||||||||
2. Which of the following desert animals can get water only from the food? | |||||||||||
A. The camel. B. The kangaroo. C. The frog. D. The rat. | |||||||||||
3. Which of the following is TRUE according to the passage? | |||||||||||
A. All the desert animals rest during the day. B. All the desert animals don"t rest during the day. C. Cold-blooded desert animals are out most of the day. D. None of the cold-blooded desert animals go out during the day. | |||||||||||
4. The title for this passage could probably be _____. | |||||||||||
A. Hot Deserts B. Desert Animals C. How Desert Animals Get Water D. Ways To Escape the Desert Heat | |||||||||||
5. The underlined word "burrows" in the first paragraph can be replaced by _____. | |||||||||||
A. holes B. caves C. rooms D. openings | |||||||||||
Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need. | |||||||||||
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