单句改错(每句均有一个错误)。

1.The woman has been to England for three years. _____

2.I think I've gone there once._____

3.Mr.Wang taught our maths last year._____

4.This is my first visit for Beijing._____

5.Miss Wang with her students have gone to the factory.______

青春期发育的第一个临床征象是（）

A．月经初潮

B． * * 初显

C．腋毛出现

D．阴毛出现

E．生长加速