薁类的性质是
A.可溶于水
B.可溶于乙醚
C.有色
D.可溶于60%~65%的硫酸
E.具有一定的芳香性
参考答案:B,C,D,E
--Do you need any help, Lucy?
--Yes. The job is ________ I could do myself.
A.not more than
B.less than
C.more than
D.no more than
按规定,一般每个受伤人员休息在1个工作日以上,( )个工作日以下。
A.30B.60C.90D.105