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【单选题】
下列物质中只含有离子键的是（ ）A.
HI
B.
NaOH
C.
H 2
D.
NaCl
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反馈参考答案：
举一反三
【单选题】Students on a tighter ______ may learn to forego these luxuries in order to pay lower rent.
A.
savings
B.
budget
C.
bill
D.
payment
【单选题】附加导线中,当铝绞线的铝线断股处按规定用同材质的绑线扎紧时,绑扎长度应超出缺陷部分( )。
A.
20-30mm
B.
30-50mm
C.
50-100mm
D.
100-200mm
【单选题】The three friends would prefer an apartment with lower rent and three _____________ that are the same size.
A.
bathrooms
B.
bedrooms
【单选题】They have ________ the rent _______ 12 dollars.
A.
to fix, for
B.
to fix, by
C.
fixed, at
D.
fixed, for
【单选题】The extra cost for traveling to work is ________ by the lower rent here.
A.
offset
B.
coerced
C.
flunked
D.
swapped
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