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【单选题】
表面活性剂结构的特点是A.
含烃基的活性基团
B.
是高分子物质
C.
分子由亲水基和亲油基组成
D.
结构中含有氨基和羧基
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【判断题】Make the judgement on the statement that the date in an English letter be written as September 9th, 2010 or 9th September, 2010.( )（英文信件的时间可以表述为September 9th, 2010或者 9th September, 2010。这种说法是否正确。）
A.
正确
B.
错误
【简答题】 The meeting will be held on second Tuesday in September.
【简答题】为什么作者说他成年之后到过了很多地方,但回过头来想一想, “ 世界其实还是那么大,它只是一个小小的北极村 ”?
【简答题】阅读理解。 September can be a depressing month. The summer holidays are over, it's time to go back to work or school and Christmas is four months away. However, for some people it's the perfect time to get...
【简答题】阅读理解。 September can be a depressing month. The summer holidays are over, it's time to go back to work or school and Christmas is four months away. However, for some people it's the perfect time to get...
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