This dress is（）more expensive than that one.

The tone ofthe article is（）.

A.indifferent
B.objective
C.persuasive
D.pessimistic

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The 104-year-old woman wanted to convert her heating system to gas because（）.

A.gas was cheaper andsafer than coal
B.she had to carry thecoal home by herself
C.coal caused pollution
D.she had to lug theashes out of the basement

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