引起目昏、雀盲、歧视的原因，多为（）
A.肝肾亏虚
B.痰湿上蒙
C.风热上壅
D.气血不足
E.肝火上炎
参考答案：A
Both Tom and Sam _____ to the party last week. [ ]
A. invited
B.were invited
C.had invited
谈判的僵局
