of the students who took part in the military training is 1450.A. A numberB. A lotC. Lots

问题补充：

of the students who took part in the military training is 1450.

A. A number

B. A lot

C. Lots

D. The number

答案：

A. A number

B. A lot

C. Lots

(答案→)D. The number

解析：考查主谓一致：句意：参加军训的学生的数量的是1450.因为这句话的谓语是is，所以用the number of 表示数量，后面接可数名词复数。做主语，谓语用单数。A numberof/a lot of/lots of +可数名词复数，“很多”谓语为复数，选D。