【題目】I think ______necessary for us ______the endangered animals and plants.

A. it； protect B. its； to protect

C. it’s; protecting D. it； to protect

【答案】D

【解析】句意：我認(rèn)為對(duì)我們來說保護(hù)瀕危滅絕的動(dòng)植物是必要的。根據(jù)句型I think it+形容詞+for sb

to do sth“我認(rèn)為做某事對(duì)于某人來說是……”，故選D。

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