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

A.A number of; A number of

B.The number of; The number of

C.A number of; The number of

D.The number of; A number of

答案及解析： 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。