问题
选择题
以下烃中二氯代物只有两种的是（ ）
A．(CH3)2CHCH3
B．CH3CH2CH3
C．CH3CH2CH2CH3
D．C(CH3)4
答案
答案：D
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以下烃中二氯代物只有两种的是（ ）
A．(CH3)2CHCH3
B．CH3CH2CH3
C．CH3CH2CH2CH3
D．C(CH3)4
答案：D
One day a famous actor had just got into the train with all his luggage when a young man came and 31 down in the seat opposite him. The young man took out a 32 and began to read it, 33 the actor tried to get some 34 in his corner of the carriage. When he opened his eyes, he 35 that the young man was looking at him with his 36 open, his book forgotten. The actor shut his eyes and tried to sleep again, 37 every time he opened them, the young man was looking at him with the same excited look .At last, he gave up the attempt(企图) to sleep, took out a newspaper, put it 38 in front of him and began to read. The young man tried several times to get into conversation with the actor, but 39 . After a long period of silence the young man said again, “I’m George P. Anderson of Willington, Vermont.” This time the actor put his 40 down and said, “So am I.” That was the end of the conversation.
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