2. 外语
  3. The company tried unsuccessfully to keep these pollution statistics______.

The company tried unsuccessfully to keep these pollution statistics______.

admin2013-11-10  23
问题 The company tried unsuccessfully to keep these pollution statistics______.
选项 A、made up
B、covered up
C、taken up
D、put up
答案B
解析 动词词组辨析。cover up表示“掩盖，掩饰”，如：cover up a scandal掩盖丑闻。
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