（C）
Astronaut Jim Voss has enjoyed many memorable moments in his career，including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound（为地球引力所束缚的）experience in the summer of 1980 when he participated in the NASA ASEE Summer Faculty Fellowship Program. Voss， then a science teacher at West Poin，was assigned to the Marshall Space Flight Center's propulsion（推进） lab in Alabama to analyze why a hydraulic fuel pump seal （液压燃料泵的密封圈）on the space shuttle（航天飞机） was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them.
“I worked a bit with NASA engineers，” says Voss， “but I did it mostly by an analysis. I used a handheld calculator， not a computer， to do a thermodynamic（热力学的） analysis.” At the end of the summer，he，like the other NASA ASEE fellows working at Marshall，summarized his findings in a formal presentation and detailed paper. It was a valuable moment for Voss because the ASEE program gave him added understanding of  NASA，deepened his desire to fly in space，and intensified his application for astronaut status.
　　It was not an easy process. Voss was actually passed over when he first applied for the astronaut program in 1978. Over the next nine years he reapplied repeatedly，and was finally accepted in 1987. Since then he has participated in three space missions. The 50 year old Army officer，who lives in Houston，is now in training for a four-month mission as a crew member on the International Space Station starting in July 2000.
　Voss says the ASEE program is wonderful for all involved. “It brings in people from the academic world and gives NASA a special property for a particular period of time. It brings some fresh eyes and fresh ideas to NASA，and establishes a link with our colleges and universities，” Voss explains. “There's an exchange of information and an exchange of perspectives that is very important.”
For the academic side，Voss says，the ASEE program also “brings institutions of higher learning more insight into new technology. We give them an opportunity to work on real world problems and take it back to the classroom.”
66. Why was the hydraulic fuel pump seal important for the space shuttle？
A） Because previous seals all failed.
B） Because it was very complex in running the space program.
C） Because great care has to be taken of the hydraulic fuel pump sealing.
D） Because any crack in the seals would cause disastrous results for the astronauts.
67.The great significance of Voss's findings lies in_________ .
A） strengthening his determination to join in space flights
B） furthering his understanding of NASA
C） consolidating his astronaut status in NASA programs
D） Both A and B
68. How many flights will Voss have finished if his four-month mission starting in July 2000 ends up successfully？
A） Three  B） Two   C） Four     D） Five
69. Which of the following is NOT TRUE according to what Voss said on the ASEE program？
A） Fresh members from the academic world participate in the program.
B） The program brings new outlooks to NASA space programs.
C） It is important for the space scientists to exchange information and perspectives.
D） American colleges and universities are a special property of NASA.
70. What does Voss want to stress in the last paragraph？
A） The technological significance of the program.
B） The educational significance of the program.
C） The philosophical significance of the program.
D） The historical significance of the program.

Astronaut Jim Voss has enjoyed many memorable moments in his career，including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound（为地球引力所束缚的）experience in the summer of 1980 when he participated in the NASA ASEE Summer Faculty Fellowship Program. Voss， then a science teacher at West Poin，was assigned to the Marshall Space Flight Center's propulsion（推进） lab in Alabama to analyze why a hydraulic fuel pump seal （液压燃料泵的密封圈）on the space shuttle（航天飞机） was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them.

“I worked a bit with NASA engineers，” says Voss， “but I did it mostly by an analysis. I used a handheld calculator， not a computer， to do a thermodynamic（热力学的） analysis.” At the end of the summer，he，like the other NASA ASEE fellows working at Marshall，summarized his findings in a formal presentation and detailed paper. It was a valuable moment for Voss because the ASEE program gave him added understanding of  NASA，deepened his desire to fly in space，and intensified his application for astronaut status.

　　It was not an easy process. Voss was actually passed over when he first applied for the astronaut program in 1978. Over the next nine years he reapplied repeatedly，and was finally accepted in 1987. Since then he has participated in three space missions. The 50 year old Army officer，who lives in Houston，is now in training for a four-month mission as a crew member on the International Space Station starting in July 2000.

　Voss says the ASEE program is wonderful for all involved. “It brings in people from the academic world and gives NASA a special property for a particular period of time. It brings some fresh eyes and fresh ideas to NASA，and establishes a link with our colleges and universities，” Voss explains. “There's an exchange of information and an exchange of perspectives that is very important.”

For the academic side，Voss says，the ASEE program also “brings institutions of higher learning more insight into new technology. We give them an opportunity to work on real world problems and take it back to the classroom.”

66. Why was the hydraulic fuel pump seal important for the space shuttle？

A） Because previous seals all failed.

B） Because it was very complex in running the space program.

C） Because great care has to be taken of the hydraulic fuel pump sealing.

D） Because any crack in the seals would cause disastrous results for the astronauts.

67.The great significance of Voss's findings lies in_________ .

A） strengthening his determination to join in space flights

B） furthering his understanding of NASA

C） consolidating his astronaut status in NASA programs

D） Both A and B

68. How many flights will Voss have finished if his four-month mission starting in July 2000 ends up successfully？

A） Three  B） Two   C） Four     D） Five

69. Which of the following is NOT TRUE according to what Voss said on the ASEE program？

A） Fresh members from the academic world participate in the program.

B） The program brings new outlooks to NASA space programs.

C） It is important for the space scientists to exchange information and perspectives.

D） American colleges and universities are a special property of NASA.

70. What does Voss want to stress in the last paragraph？

A） The technological significance of the program.

B） The educational significance of the program.

C） The philosophical significance of the program.

D） The historical significance of the program.

（C）

Astronaut Jim Voss has enjoyed many memorable moments in his career，including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound（为地球引力所束缚的）experience in the summer of 1980 when he participated in the NASA ASEE Summer Faculty Fellowship Program. Voss， then a science teacher at West Poin，was assigned to the Marshall Space Flight Center's propulsion（推进） lab in Alabama to analyze why a hydraulic fuel pump seal （液压燃料泵的密封圈）on the space shuttle（航天飞机） was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them.

“I worked a bit with NASA engineers，” says Voss， “but I did it mostly by an analysis. I used a handheld calculator， not a computer， to do a thermodynamic（热力学的） analysis.” At the end of the summer，he，like the other NASA ASEE fellows working at Marshall，summarized his findings in a formal presentation and detailed paper. It was a valuable moment for Voss because the ASEE program gave him added understanding of  NASA，deepened his desire to fly in space，and intensified his application for astronaut status.

　　It was not an easy process. Voss was actually passed over when he first applied for the astronaut program in 1978. Over the next nine years he reapplied repeatedly，and was finally accepted in 1987. Since then he has participated in three space missions. The 50 year old Army officer，who lives in Houston，is now in training for a four-month mission as a crew member on the International Space Station starting in July 2000.

　Voss says the ASEE program is wonderful for all involved. “It brings in people from the academic world and gives NASA a special property for a particular period of time. It brings some fresh eyes and fresh ideas to NASA，and establishes a link with our colleges and universities，” Voss explains. “There's an exchange of information and an exchange of perspectives that is very important.”

For the academic side，Voss says，the ASEE program also “brings institutions of higher learning more insight into new technology. We give them an opportunity to work on real world problems and take it back to the classroom.”

66. Why was the hydraulic fuel pump seal important for the space shuttle？

A） Because previous seals all failed.

B） Because it was very complex in running the space program.

C） Because great care has to be taken of the hydraulic fuel pump sealing.

D） Because any crack in the seals would cause disastrous results for the astronauts.

67.The great significance of Voss's findings lies in_________ .

A） strengthening his determination to join in space flights

B） furthering his understanding of NASA

C） consolidating his astronaut status in NASA programs

D） Both A and B

68. How many flights will Voss have finished if his four-month mission starting in July 2000 ends up successfully？

A） Three  B） Two   C） Four     D） Five

69. Which of the following is NOT TRUE according to what Voss said on the ASEE program？

A） Fresh members from the academic world participate in the program.

B） The program brings new outlooks to NASA space programs.

C） It is important for the space scientists to exchange information and perspectives.

D） American colleges and universities are a special property of NASA.

70. What does Voss want to stress in the last paragraph？

A） The technological significance of the program.

B） The educational significance of the program.

C） The philosophical significance of the program.

D） The historical significance of the program.

I keep medicines on the top shelf, out of the children’s        .

A. reach       B. hand       C. hold       D. place

The twentieth century saw greater changes than any century before: changes for the better,

changes for the worse; changes that brought a lot of benefits to human beings, changes that put man in danger. Many things caused the changes, but, in my opinion, the most important was the progress in science.

     Scientific research in physics and biology has vastly broadened our views. It has given us a deeper knowledge of the structure of matter and of the universe; it has brought us a better understanding of the nature of life and of its continuous development. Technology m the application of science m has made big advances that have benefited us in nearly every part of life.

     The continuation of such activities in the twenty-first century will result in even greater advantages to human beings: in pure science -- a wider and deeper knowledge in all fields of learning; in applied science -- a more reasonable sharing of material benefits, and better protection of the environment.

      Sadly, however, there is another side to the picture. The creativity of science has been employed in doing damage to mankind.  The application of science and technology to the development and production of weapons of mass destruction has created a real danger to the continued existence of the human race on this planet. We have seen this happen in the case of nuclear weapons, Although their actual use has so far occurred only in the Second World War, the number of nuclear weapons that were produced and made ready for use was so large that if the weapons had actually been used, the result could have been the ruin of the human race, as well as of many kinds of animals.

     William Shakespeare said, “The web of our life is of a mingled yarn (纱线), good and ill together.” The above brief review of the application of only one part of human activities----- science seems to prove what Shakespeare said. But does it have to be so? Must the ill always go together with the good? Are we biologically programmed for war?

Which of the following best shows the structure of the passage?

A.               B.                   C.                  D.

From the fourth paragraph, we can infer that________.

A. a great many nuclear weapons were actually used for war

B. a large number of nuclear weapons should have been used for war

C. the author is doubtful about the ruin of human beings by nuclear weapons

D. the author is anxious about the huge number of nuclear weapons on the earth

The underlined word "mingled" in the last paragraph most probably means________.

A. simple           B. mixed           C. sad               D. happy

What do you think the author is most likely to suggest if he continues to write?

A. Further application of science to war.

B. More reading of William Shakespeare.

C. Proper use of science in the new century.

D. Effective ways to separate the good from the ill.