题目内容

The word "precise" in line 13 is closest in meaning to()

A. planned
B. rational
C. required
D. accurate

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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. are used only on television
C. are not carefully worded
D. reflect political opinions

The word "surge" in line 18 is closest in meaning to()

A. sharp increase
B. sudden stop
C. important change
D. excess amount

Almost()substances expand in volume when heated and contract when cooled.

A. all
B. they all
C. all of
D. all are

The word "obscure" in line 1 is closest in meaning to()

A. interesting
B. unclear
C. imperfect
D. complex

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