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【单选题】
下列有关有机化合物的性质和用途的说法正确的是A.
乙烯分子与苯分子中碳碳键不同，但二者都能发生加成反应
B.
乙烯、聚氯乙烯结构中都含有碳碳双键
C.
乙醇既可以作燃料，也可以在日常生活中使用，如无水乙醇可用于杀菌、消毒
D.
一溴甲烷与1，2—二溴乙烷互为同分异构体
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【简答题】(英译汉)Please open an L/C covering twenty metric tons of apples for the amount of USD 20,000.
【单选题】Jeff's father had never thought that his son would take a job at a ski resort and became extremely angry when the son told him of his decision.
A.
Implied
B.
Not implied
【判断题】The author thought of his father as his hero, he had all the qualities that those famous people had.
A.
正确
B.
错误
【简答题】(英译汉)Please see to it that the covering L/C is opened without delay.
【简答题】Ade thought that the popularity of his works would help him in the long run in terms of his ______.
【简答题】A．containing B．concealing C．comprising D．covering
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