初中英语的句子填空

1
Their skin soon ____(become) too small so they must shed it in order to get bigger.
2
Permanent magnets are materials in which this magnetic effect occurs ______(填介词) the natural movements of electrons.
3
When smokers who are used to cigarettes go without it for an hour or two, they begin to _______(feel worse).
4
Global warming could change our current world climate zones, which would affect where crops are grown and even drive some plant and animals species _____(填介词)extinction.
5
A new study predicts that by the year 2100, many of today's familiar climates will be replaced by climates _____(known)in today's world, if current rates of greenhouse gas emissions continue.
6
Gases such as carbon dioxide _____(producing) by burning of coal, oil, wood, together with industrial pollution, are creating a warm blanket around the earth.
7
Computers are only ____(efficient) when problems are clearly described in advance and they are next to useless when problems are not clearly described.
8
Much research _____(support)the conclusion that pollution from coal-powered electric generating stations in the Midwestern United States is the ultimate cause of the severe acid-rain problem in eastern Canada and northeastern U.S.

第2题包括填连词

1、became; 由后面的shed提示时态

2、in; in和the nature搭配

3、feel worse; begin to 后接动词原形

4、to/into; 与 extinction 搭配

5、unknown; 题意：现在的许多熟悉的气候将会被如今_____气候所代替。明显地，这里要填的是定语。要么用定语从句，要么用非谓语动词。好像这里不让填句子，非谓语的话，那只有ed的形式能填进

6、produced; 整句的主干Gases are creating...所以Gases后面的到are为止全都是修饰Gases的定语。由于没有定语从句引导词，所以不能有动词出现。非谓语又出场了

7、efficient 句意：电脑只在问题事先被明确解析后才有效率，而面对没有清楚的问题，它们就几乎无能为力

8、supports 全句为一般现在时，Much research……不可数，动词用单数

楼主：
一楼的没有详解（而且不当之处较多），二楼的是自动翻译引擎的结果，三楼盗窃一楼的成果。非谓语对于初中生来说还是比较难的，如果您有意向的话，我愿意与您共同探讨非谓语的用法。最后希望楼主满意。

以上答案全部原创。

1，became 2,from 3,feel bad 4,into 5 unknown 6 produced 7 inefficient 8 supported

he has yielded to accept my view.

in big cities, many old people died of the air pollution.

in another word, none of us can go to the movie.

when we breathe in others' smoke, we can get diseases as well.