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D. Carefully worded questions Question 39



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D. Carefully worded questions

Question 39. What does the passage mainly discuss?

A. The importance of polls in American political life

B. The principles of conducting surveys

C. The history of surveys in North America

D. Problems associated with interpreting surveys

Question 40. According to the passage, the main disadvantage of person-on-the-street interviews is that they______.

A. are not based on a representative sampling B. reflect political opinions

C. are used only on television D. are not carefully worded
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Question 41.Is it necessary that I _____ here tomorrow?

A. were B. am being C. be D. would be



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