Question

______ people are standing outside the office. _____ people there is at least over 1,000

1. A.
   A number of; A number of
2. B.
   The number of; The number of
3. C.
   A number of; The number of
4. D.
   The number of; A number of

Answer 1

C
试题分析：句意：许多人正站在办公室的外面。这里的人数至少超过1，000。两者后都可以跟可数名词的复数，意思和用法不同。a number of 许多，若干；the number of…的数目。故选C。
考点：考查短语辨析。