A good advertisement, people attach positive meanings, can contribute to the sales of a product．_刷题宝

题干

A good advertisement, people attach positive meanings, can contribute to the sales of a product．

A：for which

B：to which

C：of which

D：on which

上一题下一题 0.0难度选择题更新时间:2019-01-27 06:37:18

答案(点此获取答案解析）

B

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阅读理解

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f (x)

的图像关于原点对称，且

x > 0

f (x) = - x^{2} + 1

x < 0

f (x) =

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