问题 改错题

Ten years ago, I had worked as a night guard in a factory. On a rainy night, all the lights of factory went out all of a sudden. I rushed out and could see nothing. Lucky for me, the warning system was directly connected with the police station. Three or four minutes late, four police car arrived at the front gate. They searched for the factory carefully, tried to find something unusual. In the end, I am told that the rain had brought about   the short circuit, that caused the accident.

答案

小题1:去掉had

小题2:of后加the

小题3:and改为but

小题4:Lucky→Luckily

小题5:late→later

小题6:car改为cars

小题7:去掉for

小题8:tried→trying

小题9:am→was

小题10:that→which

题目分析:

小题1:根据前面的时间状语,说明只有过去时

小题2:特指factory,故使用the

小题3:上下文是转折关系,故使用but

小题4:用副词做状语,修饰整个句子

小题5:later放在一段时间的后面

小题6:根据上文的four说明使用复数形式

小题7:search可以作为及物动词search the place搜查某地

小题8:they与try构成主动关系,使用现在分词做状语

小题9:本文使用一般过去时

小题10:非限制性定语从句不能用that引导

点评:考查考生在上下文中运用语法的能力,要学生根据文章的意思,找出错误的地方。需要用适当的形式填写,动词的时态,名词的数都要考虑。要特别注意动词时态。

单项选择题

It is clear that some chemicals can damage the health of animals and humans. (1) , this is not the only problem that (2) be caused by the careless use of chemicals. Chemicals can also (3) the ecological balance of the environment. If the ecological balance is disturbed, the results can be (4) serious.

The (5) of DDT illustrates the problem. DDT, a chemical which kills insects, at first seemed to be a perfect answer (6) many problems. It would control insects that caused dangerous diseases, (7) insects that caused billions of dollars of damage to crops every year. Governments permitted and even (8) the use of DDT. Farmers in many countries (9) to spray it on their crops. The (10) results were good: Damage to crops (11) down, and profits went up. However, the chemical had effects which the scientists didn’t see in (12) . First, it also killed insects which were the (13) enemies of the harmful insects and which were therefore beneficial to farmers. Second, and perhaps worse, DDT did not kill (14) harmful insect. A few insects had natural resistance to the chemical. They (15) and reproduced in large numbers. In a few years there were large numbers of insects which were not (16) by DDT, and there were (17) insects which could act as natural (18) on these new "super-insects". Finally, it became clear that DDT was not solving the insect problem. In fact, it was making the problem worse. It (19) became necessary to find a second (20) for the effects of the first.

3()

A.cause 

B.harm 

C.break 

D.disturb

单项选择题