The number of the students in our school about 3000 and them study hard.
A. is, a large amount of
B. are, a number of
C. are, large amount of
D. is, a large number of
网友回答
A. is, a large amount of
B. are, a number of
C. are, large amount of
(答案→)D. is, a large number of
解析：考查主谓一致和固定词组。名词Number的词组中the number of…指“…的数量”；做主语时候，谓语动词用单数的形式；a number of…许多，大量；做主语的时候，修饰可数名词复数形式，谓语动词用复数形式。A large amount of许多，大量，通常修饰不可数名词。句意：我们学校里的学生的数量大约是3000，他们中有很多人学习都很努力。故D正确。