智力低下见于（）
A.先天性甲状腺功能减退症
B.苯丙酮尿症
C.两者均有
D.两者均无
参考答案：C
Do let my mother know all the truth. She appears __________everything. [ ]
A. to tell
B. to be told
C. to be telling
D. to have been told
纳税人的停业期限不得超过一年。()
