The number of students in our schoolabout 30 000 andthem study hard.A. is;a large amount o

问题补充：

The number of students in our schoolabout 30 000 andthem study hard.

A. is;a large amount of

B. are;a number of

C. is;large amount of

D. is;a large number of

答案：

A. is;a large amount of

B. are;a number of

C. is;large amount of

(答案→)D. is;a large number of

解析：the number of+复数名词，意为“……的数目”。作主语时，谓语动词用单数；a number of+复数名词。句意为：我们学校的学生数为30 000，并且大多数人学习努力。