____ most of the earth"s surface is covered by water, fresh water is very rare a

题型：上海高考真题难度：来源：

____ most of the earth"s surface is covered by water, fresh water is very rare and precious.

[ ]

A. As
B. Once
C. If
D. Although

答案

举一反三

Peter was so excited _____ he received an invitation from his friend to visit Chongqing.

[ ]

A. where
B. that
C. why
D. when

题型：0103 期末题难度：| 查看答案

— Why do you drink so much tea?
— Well, _____ it doesn"t keep me awake in the nights.

[ ]

A. although
B. as soon as
C. as long as
D. while

题型：0103 期末题难度：| 查看答案

Stand up _____ you fall down, and I"m sure you"ll succeed in time.

[ ]

A. until
B. where
C. before
D. which

题型：0108 期末题难度：| 查看答案

The chang"e-I lesson is that national goals can be met _____ there is a strong enough will to do so.

[ ]

A. where
B. though
C. before
D. until

题型：云南省期末题难度：| 查看答案

But this really is a surprise. It must be ten years _____ we last met in Beijing, isn"t it?
And now we run into each other in Xiamen.

[ ]

A. since
B. before
C. when
D. that

题型：0113 期中题难度：| 查看答案