小儿麻痹症常累及的脏腑是（）
A.肺
B.胃
C.肾
D.肝
E.脾
参考答案：A, B, C, D
There's no light on in the dormitory. They must have gone to attend the concert to be held on the
campus, ________?[ ]
A. didn't they
B. mustn't they
C. haven't they
D. shouldn't they
1工程大气压等于（）物理大气压。
A、1
B、1.033
C、0.9678
D、10
