Junk messaging has been a headache for years, ＿＿the action taken by the authori-
题型：不详难度：来源：
| Junk messaging has been a headache for years, ＿＿the action taken by the authori-ties has not yet produced the results expected |
答案
| B |
解析
试题分析：考查连词：句意：垃圾消息是多年以来一直让人头痛的事情，但是政府采取的行动还没有达到预想的效果。两句话是转折关系，用but，as正如，so因此，before在….前面，选B。 |
举一反三
Price continued to rise ______ pay was still low, with the result ______ the government became increasingly unpopular.| A．when; that | B．while; which | C．when; which | D．while; that |
|
I was doing my homework in my bedroom _______the light went out. I did it with a candle on.| A．which | B．while | C．when | D．where |
|
Child ______ he is, he can speak four different languages.
A. as B. although C. if D before |
A. whatever B wherever C. however D. whenever |
| _________ caused the accident is still a mystery. |
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