of the students who took part in the military training is 1450.
A. A number
B. A lot
C. Lots
D. The number
网友回答
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。