At night, plants _________carbon dioxide and at the same time _________oxygen. So, we may put some in our bedrooms to purify the air.
A.take in, give out
B.take up, give off
C.take in, give in
D.take off, give up
答案:A
题目分析:句意:在晚上,植物吸收二氧化碳,同时散发出氧气,所以我们可以放一些植物在卧室净化空气。第一空填take in吸收,欺骗,理解,take up从事,拿起,开始学,占据,take off起飞,脱下,开始流行,第二空填give out“散发出”,give in“屈服,让步”,give off散发,give up放弃,所以选A。