There were about six ______ students in the school building during the earthquake, and ______ of them didn’t run out.

A．hundred, two third

B．hundred, two thirds

C．hundreds, two thirds

D．hundreds, two third

苯丙酮尿症的临床特点是（）

A.爆发、皮肤色泽变浅

B.智力发育落后

C.惊厥

D.尿和汗液有鼠尿臭味

E.肌张力增高