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【判断题】
甲醇、醇和丙三醇中,只有丙三醇能用新制的氢氧化铜溶液鉴别。( )A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】On his way to the airport，it ________him all of a sudden that he had forgotten his passport.
A.
hit
B.
knocked
C.
occurred
D.
beat
【单选题】All of a sudden, he lost his interest in engineering, and his attention on learning a foreign language.
A.
focused
B.
estimated
C.
adopted
D.
analyzed
【单选题】On his way to the airport, it ________ him all of a sudden that he had forgotten her birthday.
A.
hit
B.
knocked
C.
occurred
D.
beat
【简答题】All of a sudden, he lost his interest in math, and focused his attention a foreign language.
【单选题】All of a sudden, he _____ his attention on learning a foreign language.
A.
adopted
B.
regulated
C.
assumed
D.
focused
【单选题】All of a sudden, he lost his interest in engineering, and his attention on learning a foreign language.
A.
focused
B.
regulated
C.
analyzed
D.
estimated
【单选题】All of a sudden，he rushed out of the room，________never to come back again. [ ]
A.
determine
B.
to determine
C.
determined
D.
having determined
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