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【單選題】
化學(xué)科學(xué)需要借助化學(xué)專用語言描述。下列有關(guān)化學(xué)用語正確的是（ ）
A.
![]()
的電子式![]()
B.
乙烯分子的結(jié)構(gòu)式![]()
C.
乙酸的結(jié)構(gòu)簡式 ![]()
D.
硫原子的原子結(jié)構(gòu)示意圖：![]()
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舉報(bào)參考答案：
舉一反三
【單選題】The manager devotes all his spare time ______ the violin.
A.
to practise
B.
to practising
C.
in practising
D.
for practising
【單選題】Last weekend, I _____ my washing machine ______.
A.
had; repair
B.
had; repairing
C.
had; repaired
D.
had; to repair
【單選題】If you have to change subway lines on a single trip, _____.
A.
you have to pay each time
B.
you should buy another ticket from the machine
C.
you must ask for the driver’s permission
D.
you just need to pay once
【單選題】It’s helpful to put children in a situation ____ they can see themselves differently.
A.
that
B.
when
C.
which
D.
where
【單選題】“The child’s life is not in er any more,” the doctor said ________.
A.
in service
B.
in relief
C.
in peace
D.
in order
相關(guān)題目：
【單選題】The manager devotes all his spare time ______ the violin.
A.
to practise
B.
to practising
C.
in practising
D.
for practising
【單選題】Last weekend, I _____ my washing machine ______.
A.
had; repair
B.
had; repairing
C.
had; repaired
D.
had; to repair
【單選題】If you have to change subway lines on a single trip, _____.
A.
you have to pay each time
B.
you should buy another ticket from the machine
C.
you must ask for the driver’s permission
D.
you just need to pay once
【單選題】It’s helpful to put children in a situation ____ they can see themselves differently.
A.
that
B.
when
C.
which
D.
where
【單選題】“The child’s life is not in er any more,” the doctor said ________.
A.
in service
B.
in relief
C.
in peace
D.
in order
參考解析：
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