问题补充:
of the students who took part in the military training is 450.
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:考查固定结构。A number of许多,大量(修饰可数名词复数)做主语,谓语动词用复数;a lot of/lots修饰可数名词复数或者不可数名词,修饰可数名词复数时,做主语,谓语动词用复数。The number of指…的数量;作主语,谓语动词用单数形式。句意:参加军训的学生的数量超过了450.