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【多选题】
强心苷元难溶于极性溶剂，易溶于氯仿、乙酸乙酯等，强心苷的溶解度特征是A.
可溶于石油醚
B.
可溶于极性溶剂如水、甲醇、乙醇、丙酮
C.
羟基越多亲水性越强
D.
苷元羟基如形成内氢键亲水性下降
E.
可溶于乙醚，苯
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皮皮学刷刷变学霸
举一反三
【单选题】My watch doesn't work. I must have it . [ ]
A.
repaired
B.
repairs
C.
repair
D.
repairing
【单选题】My watch doesn't work. There is _____ wrong with it. [ ]
A.
nothing
B.
anything
C.
something
【单选题】My watch doesn't work. I must have my brother ______ it. [ ]
A.
repaired
B.
repairs
C.
repair
D.
to repair
【简答题】My watch doesn't work.It really needs repairing.
【单选题】My watch doesn't work. I must have it . [ ]
A.
repaired
B.
restored
C.
mended
D.
fixed
【简答题】Let’s fix a time for our next meeting． A) Sorry, my watch doesn't work. B) It's too late. C) I don't know the time. D) Will 3:00 p. m. be OK for you?
【单选题】My watch doesn't work, I must have it ___.
A.
to repair
B.
repaired
C.
repairing
D.
being repaired
【单选题】My watch doesn't work. I want to get it _____ tomorrow. [ ]
A.
repaired
B.
repairs
C.
to repair
D.
repairing
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