帕金森病的好发年龄为
A．青壮年
B．中年
C．青春期
D．中老年
E．青少年
参考答案：D
解析：本病的好发年龄是中老年人。
______ is in the classroom. In fact many students were late for school ________me because of the
heavy rain. [ ]
A. No students; except
B. Not every student; besides
C. Not all the students; but
D. No every student; except
160吨煤需要8辆同样的车10次运完，现需要煤炭200吨，规定在5趟内运完，需要增加多少辆车子
A．8
B．10
C．12
D．20
