感冒的主要临床表现有：
A.鼻塞流涕
B.喷嚏头痛
C.恶寒发热
D.寒战壮热
E.全身不适
参考答案：A, B, C, E
________ here yesterday, he would attend the lecture with us today. [ ]
A. Had he been
B. If he were
C. Were he
D. Should he be
在喷涂擦净工段，有（）
A、人工擦净和机械鸵鸟毛擦净
B、人工擦净
C、机械鸵鸟毛擦净
