题目内容
In Switzerland, the Kingdom of clocks and watches, people discovered a new type
1.________
of clock recently. It is the air clock.
2.________
The dock needn’t to be wound up. Under
3．________.
normally condition, it can keep on going for 600
4．________.
years. Kept in a box made of a plastic film, which expands( 膨胀) and contracts(收缩) according to
5．________.
the changed temperature, the clock goes on and on
6．________.
itself. One degree up or down in temperature can
7．________.
keep them running for 48 hours. Now
8．________.
Swiss government makes it a gift
9．________.
to honored guests from other country.
10．________.
解析：
1. 这一题比较难，钟表显然不可能是发现的，应该是发明的， 2. 完全正确 3. need和not连用时，是情态动词，不需要加to 4. normal修饰名词时应该用形容词形式 5. 不可能同时膨胀或收缩，用or 6. 湿度不是被变化，是变化着的，用changing 7. of oneself自动地 8. 前面举了一个表做例子，这里也应该用it 9. 瑞士政府是独一无二的，用the表示特指 10. 其他国家应该是复数
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提示：
1. discovered-invented 2. √ 3.去掉 to 4. normally-normal 5. and-or 6.changed-changing 7. itself-of itself 8. them-it 9. Swiss-the Swiss 10. country-countries
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