函数fx的定义域为R，且满足：fx是偶函数，fx-1是奇函数，若f0.5=9，则f8.5=（）

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A：-9

B：9

C：-3

D：3

上一题下一题 0.0难度选择题更新时间:2018-04-09 11:46:30

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B

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Sunny Language School
We are a language school for children of 12—18. We want an assistant in the library, an English teacher, a gate- keeper, and a sports coach.

Job	Age	Language	Skill（能力）	Other term（其他条件）
lab assistant	20—35	Chinese, English	enough experience (经验, 经历)for the job	careful（细心）
teacher	20—45	English, French, Japanese	have the TQC(教师资格)	responsible（负责）
sports coach	20—40	Chinese, English	major（专业）in P.E.	healthy and strong（强壮）
gate-keeper		Chinese	have a good memory（记忆力）	healthy

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