题目内容
11.This sustainable development needs to be different from past development,which ________ the pollution of the environment and waste of natural resources.( )| A. | caused | B. | will cause | C. | had caused | D. | causes |
分析 这种可持续发展需要不同于过去的发展,它曾造成了环境污染和自然资源的浪费.
解答 答案:A
根据句意可知,"which ________ the pollution of the environment and waste of natural resources"是非限定性的定语从句,修饰它前面的先行词past development,因此从句描述的是过去的发展状况,故用一般过去时;故选A
点评 本题考查了一般过去时的用法.做类似题时,应根据句意或句中时间状语的提示,判断出该动作是发生在过去,所以要使用一般过去时,即动词的ed形式.
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