1.Water will continue to be ____ it is today----next to oxygen in importance.A.how B.asANSWER:A2.--My foot hurts terribly ,doctor.--Well,I wonder ____ it has been like this.A.since when B.since thenANSWER:B

问题描述:

1.Water will continue to be ____ it is today----next to oxygen in importance.
A.how B.as
ANSWER:A
2.--My foot hurts terribly ,doctor.
--Well,I wonder ____ it has been like this.
A.since when B.since then
ANSWER:B

as这个词语的意思更注重的是"作为",所以,选择HOW
SINCE THEN表示的是从那时开始,SINCE WHEN的意思是从现在开始,根据理解,应该是从脚弄坏以后.所以选择B