上颌前牙的远中向倾斜角度为（ ）。

A．中切牙=侧切牙=尖牙

B．中切牙＞侧切牙＞尖牙

C．中切牙＞类牙＞侧切牙

D．侧切牙＞尖牙＞中切牙

E．尖牙＞侧切牙＞中切牙

The little boy was the only one who _____ the earth- -quake in his village, and the government sent him to a city school after that.

A．experienced

B．escaped

C．survived

D．suffered