What does the passage mainly discuss? A. The history of surveys in North America B. The principles of conducting surveys C. Problems associated with interpreting surveys D. The importance

What does the passage mainly discuss?

A. The history of surveys in North America
B. The principles of conducting surveys
C. Problems associated with interpreting surveys
D. The importance of polls in American political life

Trả lời

Chọn đáp án B

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