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In this section, we will briefly describe possible ways of reducing the costs and risks ______ in doing this.
A.involvingB.involvedC.to involveD.being involved
B

试题分析:考察固定搭配。固定搭配be involved in…参与…卷入…;与…有关;本句中使用involved in doing this来修饰前面的名词risks;句意:在这个部分,我们主要描述了降低成本的方法和这样做的有关的危险。involved in doing this相当于which is involved in doing this。故B正确。
点评:固定搭配是学习语言的重要环节。要掌握好英语,记忆相当数量的词组是必不可少的。英语中的每一个词组,不仅表达一定的概念,具有一定的词汇意义,而且在语音、拼法、语法等方面都有自己的特点。在学生学习英语的过程中,单词、词组记忆是基础。解答这类题目,关键是理解题干意思以及各选项词组的意思,可以像数学中的代入法一样,依次把各个选项意思放入句子中进行比较,不难选出正确答案。
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