Experts believe people can waste less food by shopping only when it is neces
题型：不详难度：来源：
| Experts believe people can waste less food by shopping only when it is necessary. |
答案
| C |
解析
根据句子结构可知， people can waste less food by shopping only when it is necessary作believe的宾语，因此是宾语从句，从句中成分、句意完整。That在名词性从句中不充当成分，也没有意义，因此选择C项。意为专家认为人们可以通过在必须的时候才购物的方式来减少浪费食物。Why作原因状语，意为为什么，where作地点状语，意为在那里，what作主语或者宾语或者表语。
【考点定位】考察名词性从句（宾语从句) |
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