出国留学网专题频道全国公共英语一级考试习题与答案栏目，提供与全国公共英语一级考试习题与答案相关的所有资讯，希望我们所做的能让您感到满意！
03-29
出国留学网英语考试栏目为各位考生提供“2017年公共英语一级考试模拟题与答案”，请各位童鞋注意报名、考试时间，不要错过哦!
1. -----Nancy is not coming tonight.
----- But she _____!
A. promises
B. promised
C. will promise
D. had promised
2. We've made some achievements, but there is still a long way _____.
A. going
B. to go
C. gone
D. to be gone
3. Dr. Bethune began to work the _____ he arrived at the front.
A. moment
B. place
C. way
D. reason
4. ----- This pen isn't yours, is it?
----- _____.
A. Yes, it's not mine
B. No, yours is bigger
C. No, it's my friend's
D. Yes, mine's a red one
5. ----- Thanks for the_____ you did me to move away the stone.
----- That's all right.
A. favour
B. good
C. trouble
D. kindness
6. She won't be afraid as _____ as you are here.
A. long
B. well
C. soon
D. far
7. It isn't quite _____whether she will take the advice.
A. sure
B. right
C. certain
D. exact
8. Shirley _____a book about China last year but I don't know whether she has finished it.
A. has written
B. wrote
C. had written
D. was writing
答案：
BBACA ACD
...03-29
出国留学网英语考试栏目为各位考生提供“2017年公共英语一级考试备考训练”，请各位童鞋注意报名、考试时间，不要错过哦!
Antarctica and Environment
Antarctica has actually become a kind of space station - a unique observation post for detecting important changes in the world‘s environment. Remote from major sources of pollution and the complex geological and ecological systems that prevail elsewhere， Antarctica makes possible scientific measurements that are often sharper and easier to interpret than those made in other parts of the world.
Growing numbers of scientists therefore see Antarctica as a distant-early-warning sensor， where potentially dangerous global trends may be spotted before they show up to the north. One promising field of investigation is glaciology. Scholars from the United States， Switzerland， and France are pursuing seven separate but related projects that reflect their concern for the health of the West Antarctic Ice Sheet - a concern they believe the world at large should share.
The Transantarctic Mountain， some of them more than 14，000 feet high， divide the continent into two very different regions. The part of the continent to the “east” of the mountains is a high plateau covered by an ice sheet nearly two miles thick. “West” of the mountain， the half of the continent south of the Americas is also covered by an ice sheet， but there the ice rests on rock that is mostly well below sea level. If the West Antarctic Ice Sheet disappeared， the wester...
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