2. 外语
  3. A、The survey received a low rate of return. B、The sample selected was not representative. C、The questionnaires were too difficul

A、The survey received a low rate of return. B、The sample selected was not representative. C、The questionnaires were too difficul

admin2010-06-11  19
问题  
选项 A、The survey received a low rate of return.
B、The sample selected was not representative.
C、The questionnaires were too difficult.
D、The results of the survey were against the public opinion.
答案B
解析
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大学英语六级

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