The world"s population problem will be serious _____ all the countries do someth
题型：同步题难度：来源：
| The world"s population problem will be serious _____ all the countries do something to control it. |
| [ ] |
A. or
B. but
C. unless
D. and |
答案
C
|
举一反三
—Why do you look so tired?
—_____ I am writing a report for the newspaper. |
| [ ] |
A. When
B. Because
C. Until
D. Although |
| _____ everyone has arrived, let"s start our class meeting. |
| [ ] |
A. Although
B. Before
C. So that
D. Now that |
| ______ it doesn"t rain next Sunday, we will go to visit the Oriental Pearl TV Tower. |
| [ ] |
A. Unless
B. If
C. When
D. How |
| _________ she doesn’t do well in her study, she is friendly to others. |
| [ ] |
A. Because of
B. Even though
C. Thanks to |
| It"s hard to imagine a world _____ printing _____ we have so many printed things now. |
| [ ] |
A. without; because
B. with; so that
C. without; as a result
D. with; so |
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