When it______air pollution, Beijing faces the three “C” s-----cars，coal and construction，which lead to Beijing's thick air pollution.
| A．refers to | B．comes to | C．happens to | D．speaks to |
相关试题
That day they ________ there on foot, but they took a taxi. The place was only 50 meters away from the railway station.
| A．must have gone | B．shouldn’t have gone |
| C．could have gone | D．couldn’t have gone |
________celebration of the 60th anniversary of the founding of the People’s Republic of China
was ________complete success.
| A．The; the | B．A; a | C．The; a | D．A; the |
第一节单项选择（共15小题；每小题1分，满分15分）
请认真阅读下面各题，从题中所给的A、B、C、D、四个选项中，选出最佳选项，并在答题卡上将该项涂黑。
例: It is generally considered unwise to give a child ________ he or she wants.
A. however B. whatever C. whichever D. whenever
--- I’m happy that we’ve finally cleared up some problems .
--- Then , let’s ______ , shall we?
--- All right . See you later.
| A．go Dutch | B．get it straight | C．call it a day | D．get a bite |
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