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搜题
【单选题】
“青山有幸埋忠骨,白铁无辜铸佞臣”是哪个景点的楹联?( )
A.
颐和园
B.
杭州西湖
C.
D.
醉翁亭
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举一反三
【判断题】具有两亲结构的物质都是表面活性剂。
A.
正确
B.
错误
【单选题】While having lunch with a friend recently, we got into a _____ that is pretty frequent in China about morning greeting.
A.
conversation
B.
conservation
C.
reservation
D.
criterion
【单选题】In order to ________ the disease, the first thing we should do is to do research about it and find out a satisfactory cure.
A.
confirm
B.
conduct
C.
control
D.
confuse
【简答题】Who is the fax sent to? It is sent to
【单选题】We should do more such exercises in the future,I think,_____ those we did yesterday.
A.
as
B.
like
C.
about
D.
than
【判断题】Silence refers the study of nonverbal communication sent by the eyes.
A.
正确
B.
错误
【简答题】细胞和组织的酸性物质或结构与硷性染料亲合力强者,称();而硷性物质或结构与酸性染料亲合力强者,称();若与两种染料的亲合力均不强者,称()。
【单选题】下列物质,具有“两亲性”的是( )
A.
肥皂
B.
-COOH
C.
奶油
D.
癸烷
E.
-SO 2 OH
【判断题】表面活性物质分子结构具有两亲结构
A.
正确
B.
错误
【判断题】表面活性剂具有“两亲性”,但并非所有具“两亲性”的物质都可作表面活性剂来使用。
A.
正确
B.
错误
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