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【单选题】
某地许多消费者投诉某品种的空调质量不好，制冷效果很差。对此，该品牌空调的总工程师说，空调之所以运转不正常，是因为当地的空气质量太差。 以下选项如果为真，能够最有效地反驳该工程师的观点的是（ ）。A.
在空气质量良好的地区，该品牌的空调运转非常良好
B.
该品牌空调在其他地区没有出现过大量的质量投诉
C.
不是所有空调的运转状态都受到空气质量的影响
D.
所有的空调都应当保证能够在当地正常运转，才能够出售
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举一反三
【单选题】Exams, grades and marks should be abolished because children's progress should be estimated only by ______.
A.
educated persons
B.
the children themselves
C.
teachers
D.
parents
【单选题】Exams, grades, and marks should be abolished because children's progress should only be assessed by ______.
A.
educated persons
B.
the children themselves
C.
teachers
D.
parents
【单选题】It' s strange that you ______ like that at the meeting.
A.
should speak
B.
spoke
C.
should have spoken
D.
speak
【单选题】According to the author, what should today's parents do?
A.
They should do the same thing as yesterday's parents did.
B.
They should educate their children according to traditional values.
C.
They should cooperate with their children's teacher.
D.
They should seek the balance between limitation on their children's behavior. and the freedom they wanted.
【单选题】AU those youngesters willbecome_________in ten years．
A.
growns-ups
B.
growns-up
C.
grown-up
D.
grown．ups
【单选题】Youngesters should settle their rivalries through competitive dance instead of fighting.
A.
F
B.
O
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