Trees take harmful gas from the air, and ______ oxygen (氧气)into the air.

admin2009-06-21 18

问题 Trees take harmful gas from the air, and ______ oxygen (氧气)into the air.

选项 A、let out
B、set off
C、give up

答案A

解析 let out释放，set off出发，启程，gave up放弃。

转载请注明原文地址:https://kaotiyun.com/show/lI0d777K

公共英语一级笔试

相关试题推荐

随机试题

最新回复(0)