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【单选题】
电话铃响( )声之内,服务员需接电话。
A.
1
B.
2
C.
3
D.
4
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参考答案:
举一反三
【单选题】铅蓄电池的内阻大小主要取决于()
A.
极板的电阻
B.
电解液的电阻
C.
隔板的电阻
D.
链条的电阻
【单选题】What do some scientists say about taking medicines for the common cold according to the passage?
A.
It is good for people.
B.
It actually does more harm than good.
C.
It can help people keep healthy.
D.
It can give them more energy.
【单选题】甾族化合物的基本结构是
A.
B.
C.
D.
环戊烷并多氢菲
【单选题】甾族化合物的基本结构是( )
A.
环戊烷
B.
全氢菲
C.
甾烷
D.
苯并菲
【单选题】— Can I have _____________ envelope and some _____________? — Sure, here you are. [     ]
A.
an; writing paper
B.
a; writing papers
C.
a; writing paper
【单选题】关于甾族化合物的基本结构说法错误的是
A.
含有环戊烷并多氢菲的骨架
B.
骨架环 C 10 上连着甲基
C.
C 17 上连着甲基
D.
C 13 上连着甲基
【单选题】Some people viewed the findings with caution, noting that a cause-and-effect relationship between passive smoking and cancer remains______ .
A.
to be shown                            
B.
to have shown
C.
to have been shown                      
D.
being shown
【单选题】铅蓄电池的内阻大小主要取决于:
A.
极板的电阻
B.
电解液的电阻
C.
隔板的电阻
D.
外壳的电阻
【单选题】------How do you like the film we saw yesterday ? ------________, I am pleased with it though some parts are boring.
A.
At last
B.
In general
C.
After all
D.
Of course
【单选题】Where do people shake their heads in a rotating movement to signify agreement?
A.
In some parts of the Western world.
B.
In Bulgaria.
C.
In India.
D.
Both A and B
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