【題目】The atmosphere lets sunlight in and keeps warmth _______ getting out.

A.byB.inC.throughD.from

【答案】D

【解析】

句意:大氣層讓陽光進(jìn)來,而不讓熱量散發(fā)出去。

考查介詞辨析。by通過……方式;in……里面;through通過,穿過;from來自……。根據(jù)句意可知,這里考查句型keep sb./sth. from doing …“阻止某人/某物做某事。故選D。

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