儿童语言发育中
能双脚跳的年龄是()
A.1岁
B.2岁
C.3岁
D.4岁
E.5岁
参考答案:B
It is almost five years_________we saw each other last time.
A.before
B.since
C.after
D.when
数学班比英语班多多少课时()
A.8
B.10
C.32
D.40