Scientists don’t think that a warm winter always has a negative influence on our life,____?
A．don’t theyB．do theyC．hasn’t itD．has it
B

試題分析：考查賓語從句中的反義疑問句。在以“主語+think”的賓語從句中，否定通常前置且反義疑問句通常是第一人稱看后面的賓語從句，而第二、三人稱看前面的主句，這兒看的是scientists,故用they,句意上為否定，選B。
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