students are playing on the playground. students there is at least over 100.A. A number of

students are playing on the playground. students there is at least over 100.
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

A. A number of; A number ofB. The number of; The number of (答案→)C. A number of; The number ofD. The number of; A number of解析：本题的含义是许多学生正在操场上玩，在那儿的学生数至少超过一百人，a number of表示许多的含义，the numberof表示……数目，故本题选C。

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