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Dr. Carl Sagan has been a leader in space exploration. He is an astronomer at Cornell University and director of the Laboratory for Planetary Studies. The author talked with Dr. Carl Sagan about how he became an astronomer.
Q: At the age of five did you know what the stars were?
A: I didn't know what they were, so I asked my friends and some older children, I got answers like “They're lights in the sky, kid.”That wasn't much of an answer. What were they? Were they little electric light bulbs(灯泡) held by black wires you couldn't see?
Q: If there are creatures living on another planet, what do you think they would look like?
A: I can't imagine what they'd look like, and they couldn't imagine what we'd look like. All of life on Earth is the same, except for some external(外部的) differences in form. Every one of us on Earth, from bacteria(细菌) to human being; is made up of the same kinds of proteins and the same kinds of nucleic acids(核酸). But on another planet, everything is different, and I would expect that the organisms would be totally different from us.
Q: Do you think we should have a manned mission(工作团)to Mars?
A: I don't think there's any reason to send people to Mars if our goal is to find out about Mars. Let's send robots instead. They're cheaper. There's no risk of human lives. Robots can go to more dangerous places. But I think there are reasons for sending people there that are not connected to finding out about Mars. Planning for a manned mission to Mars would force us to improve some of our technology. It would encourage the major technological nations to come together for the project. Space flight also speaks to something deep within us. A human mission to Mars would provide a sense of adventure. It would help to stimulate a new generation of scientists, and it would make all people feel a little more optimistic about what we can do as a planet.
Q: What advice would you give a young person who wants to be an astronomer?
A: I'd say,“Study physics. But before you can study physics you have to know mathematics, so study mathematics.”I would also encourage them to read a lot, be curious, and ask questions.
1.As a boy, Carl Sagan didn't ________.
[ ]
A.often ask questions
B.always get satisfying answers from his friends
C.try to do well in physics
D.read a lot
2.We human beings are interested in finding life on another planet because ________.
[ ]
A.we are naturally drawn to other things that are alive and are curious about them.
B.most of us want to have more friends.
C.some of us are eager to rule the universe
D.scientists want to show how modem our technology is
3.Robots can be sent to Mars because ________.
[ ]
A.we have enough robots
B.they're strong and big
C.everything is easy to them
D.some duties are too dangerous for human being to fulfill
4.A manned mission to Mars ________.
[ ]
A.is reasonable if the goal is to collect information
B.is O.K. if robots are sent as well
C.can make us improve some technology to prepare for it
D.can make strong nations come together
5.Which of the following statements is true?
[ ]
A.Carl Sagan is an astronaut.
B.Carl Sagan used to ask friends silly questions.
C.Carl Sagan thinks we can't imagine what creatures on another planet look like until they can imagine our appearance.
D.Carl Sagan encourages young people interested in astronomy to work hard at physics as well as mathematics.
查看习题详情和答案>>-He looks very hot and dry. -So______if you had a temperature of 40℃.
A. would you B. will you
C. would have you been D. do you
查看习题详情和答案>>(09年黄冈中学高考英语模拟题,14)-He looks very hot and dry. -So______if you had a temperature of 40℃.
A. would you B. will you
C. would have you been D. do you
查看习题详情和答案>>-He looks very hot and dry. -So______if you had a temperature of 40℃.
A. would you B. will you
C. would have you been D. do you
查看习题详情和答案>>What is your favorite English letter? Many of you may say Q. Why? Because
so many of you chat with your friends on QQ. What do you like about QQ? What do you talk about? The CCTV reporter, Miss Wang, interviews three kids. Let’s listen to what they say.
When do you chat on QQ? What do you talk about?
Lin Yuhan, Xi’an: On weekends. We talk about homework and chat with each other.
Tang Xuting, Shanghai: At weekends and when I don’t have much homework. We exchange test answers and chat.
Yang Yuhang, Dalian: Our class goes online together at 4: 00~6: 00pm on weekends. We complain about homework, chat and talk about computer games.
What do you put on your QQ blog(博客)?
Lin: I put good articles I have found online on my blog. I also write articles myself. They are about funny things that have happened in my class.
Tang: I put pictures on my blog. Not my own photos, but pictures from my favorite Japanese cartoons(动画片)like Tennis Prince Conan.
Yang: I put DV films on my blog. I shoot(拍摄)them during sports meetings and school parties. The most popular one is about a dancing teacher, he is so funny that everyone watches it.
How do you like QQ?
Lin: It’s a good space for us to make a record of our lives of both good times and sad times.
Tang: My friends and I may not have time to chat at school. But we can do it on QQ. It’s very helpful to our friendships.
Yang: If you chat with friends on the telephone, your parents sometimes listen to your conversation. There’s no such problem with QQ. You can relax and talk freely.
1.What does Yang Yuhang talk about on QQ on weekends?
①homework ②chat
③test answers ④computer games
A.①② |
B.②③ |
C.①②④ |
D.②③④ |
2.What does Lin Yuhan put on her QQ blog?
A.Some pictures. |
B.Good articles. |
C.DV films. |
D.Japanese cartoons. |
3.Which one is TRUE according to this article?
A.Lin says QQ is very helpful to their friendships. |
B.Yang says he can chat freely with many friends and relax on QQ. |
C.Tang says QQ is a good space for them to make a record of their lives. |
D.Tang says he chats on QQ on weekends though he has lots of homework. |
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