2. 考研
  3. A series of lectures on radio engineering______scheduled.

A series of lectures on radio engineering______scheduled.

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问题 A series of lectures on radio engineering______scheduled.
选项 A、have been
B、has been
C、are
D、had been
答案B
解析 以series of+名词(复数)作主语时，谓语的数与series保持一致。series单复数不变，以a series of作主语时谓语动词用第三人称单数；以two series of作主语时谓语动词用第三人称复数。用法与此相同的同类名词还有means／species／sheep等。以collectionof／fleet of等作主语时，谓语的数与这两个名词保持一致。
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