智力发展的关键期是（）
A.1岁前
B.3岁前
C.4岁前
D.5岁前
E.7岁前
参考答案：E
解析：智力发展关键期在7岁前。
比32少18的数是（ ），比47多6的数是（ ）。
When you phoned me, I was having a meeting, otherwise I _____ your call.[ ]
A. answered
B. would answer
C. had answered
D. would have answered
