问题
选择题
Last year the number of students who graduated with a driving licence reached 200,000,a(n) ____________ of 40,000 per year.
A.average
B.number
C.amount
D.quantity
答案
答案:A
句意:去年考过驾照的学生人数达到了20万,平均每年4万。an average of平均是……。