Question

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

Answer 1

A

试题分析：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。