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Scientists are trying to ___ what people can do to save anim

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Scientists are trying to ___ what people can do to save animals.A find B look for C look at find o
为什么?
C look at find 是不是C look at D find out,那么我认为应该选D.
一.首先不能选C,与题意不符.
二.不选A和B,look for 与find是相对应的,前者强调动作,表“寻找”,后者强调结果,表“找到”.去找某物,就说I looked for sth,找到某物,就说I found sth.找不到某物,就说I couldn't find sth.
而find out 一般是指“(通过研究、调查)查明了真相,弄清了事实/找到了方法或途径”等等,它暗示的前提是“有一定的难度”.如:
He found out the truth,but he didn't want to tell anyone.他查到了真相,但他并不想告诉任何人.
To find out who has stolen the money,he made a big decision.为了弄清楚是谁偷走了这些钱,他做了一个重大的决定.
其实,如果明白find out的用法,不用排除法就可做出这道题.