When comes to saving energy.big changes start with small steps.like turning off the lights．( )A．thatB．thisC．itD．one 题目和参考答案——青夏教育精英家教网——

题目内容

14．When _______________ comes to saving energy，big changes start with small steps，like turning off the lights．（　　）

A．

that

B．

this

C．

it

D．

one

分析当谈到节省能源，大的变化开始于小的步骤，如关掉灯．

解答答案：C That 特指可数名词单数和不可数名词 this代指后文提到的事物 it代指上文提到的同一个事物，此处是when it comes to 固定结构，意为当涉及到，当谈到，one 泛指可数名词单数．句意：当谈到节省能源，大的变化开始于小的步骤，如关掉灯．故选C．

点评本题考查代词，熟知代词及when it comes to 固定结构，当涉及到，当谈到，的基础上便不难选出此题答案．

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