Many people believe we are heading for environment disaster ____ we basically ch

题型：模拟题难度：来源：

Many people believe we are heading for environment disaster ____ we basically change the way we live.

A. if
B. but
C. unless
D. once

答案

举一反三

It is difficult for us to eat better, exercise more and sleep enough, ____ we know we should.
A. as if
B. the moment
C. even if
D. so that

题型：模拟题难度：| 查看答案

Unlike watching TV, reading is a highly active process ____ it requires attention as well as memory and imagination.
A. until
B. but
C. unless
D. for

题型：模拟题难度：| 查看答案

I didn"t realize my mistake ____ my teacher had a face-to-face talk with me.A. until
B. after
C. since
D. when

题型：模拟题难度：| 查看答案

Zhouqu County, Gansu Province is seeing improvements in life after the serious mudslides, ____ life is still far from normal.
A. though
B. because
C. unless
D. lest

题型：模拟题难度：| 查看答案

The landslide almost flattened the small town of Zhouqu, leaving 1,248 dead and 496 missing. I wonder how long it will be ____ the people there get over the shock.
A. before
B. when
C. since
D. after

题型：模拟题难度：| 查看答案