皮皮学，免费搜题
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【多选题】
常用于检识生物碱的试剂是A.
碘 - 碘化钾
B.
碘化铋钾
C.
硫酸铜 - 氢氧化钠
D.
碘化汞钾
E.
二硫化碳 - 硫酸酮
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【简答题】One day Jerry borrowed a pot from his neighbor Tom. The next day he brought it back with another little pot inside. "That's not mine," said Tom. "Yes, it is," said Jerry. "While your pot was staying w...
【单选题】I don't know why Wang Xiaoming _____ us recently. [ ]
A.
hasn't wrote
B.
hasn't written
C.
doesn't write
D.
isn't writing
【单选题】Tom ________ a letter from Terry for a long time.
A.
didn’t receive
B.
hasn’t got
C.
didn’t have
D.
hasn’t heard
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