川大《大学英语(三)0003》15春在线作业二100分答案
《大学英语(三)0003》15 春在线作业 2 一、单选题（共 40 道试题，共 100 分。 ）
1. I was talking with my mother on the phone when we were _______ suddenly. A. cut down B. cut off C. cut across D. cut back 正确答案：B
2. It is likely that our team _______ the game. A. is about to win B. will win C. wins D. has won 正确答案：B
3. John’s father _______ mathematics in this school ever since he graduated from Harvard University. A. taught B. teaches C. has taught D. is teaching 正确答案：C
4. —Would you mind shutting the door? —________________. A. Yes, please. B. Not at all. C. No, I’m sorry. D. All right. 正确答案：B
5. As long as the sun shines, the earth will not run out of energy. The sun pours more
energy on earth than we can ever use. Most of that energy comes to us as heat and light. Energy from the sun is called solar energy. Anything to do with the sun is called
\who was called Sol. Solar energy is a safe kind of energy. It doesn't make pollution or have dangerous leftovers. That is why scientists and investors are experimenting with ways of harnessing（治理利用）the sun to do some of the jobs fossil fuels have been doing. But to make the sun do work like that, they have to solve some problems. They have tocollect the sun's energy. Collecting sunshine is not easy, unless you are a plant.
Sunshine is not easy to store, either. You can't fill a tank with it or put it in
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