定义域为R的函数f(x)对任意x都有f(2+x)=f(2-x),且其导函数f′(

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问题:

定义域为R的函数f(x)对任意x都有f(2+x)=f(2-x),且其导函数f(x)满足
f(x)
2-x
>0,则当2<a<4,有(  )
A.f(2a)<f(log2a)<f(2)B.f(log2a)<f(2)<f(2a
C.f(2a)<f(2)<f(log2a)D.f(log2a)<f(2a)<f(2)
考点:函数的单调性、最值函数的奇偶性、周期性函数的单调性与导数的关系
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入侵检测系统按其输入数据的来源分为3种,其中不包括()。

A.基于主机的入侵检测系统

B.基于网络的入侵检测系统

C.分布式入侵检测系统

D.集中式入侵检测系统

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亚洲是我们生活的大洲,它地域辽阔。读图回答下列问题。(5分)

(1)作为世界第一大洲,亚洲有着很多世界之最:①是“世界屋脊”               高原;②是世界上面积最大的              半岛。

(2)亚洲气候复杂多样,③地气候终年严寒,④地终年高温多雨,造成两地气候差异的主要因素是             因素。

(3)几位同学正在描述到亚洲各地度假旅游的情景。其中不可能发生的是(  )

A.小明:在印度我乘着雪橇逛街

B.小畅:我在去蒙古乌兰巴托的火车上看见了大草原

C.小兰:我不会游泳却可以不带游泳圈在死海中畅游

D.小华:在沙特阿拉伯,旅店安排我们在屋顶上睡觉(4)亚洲人民创造了灿烂的古代文明,以下古迹位于印度的是(   )

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Are you looking for something fun and would you like to help others in your spare time? Then join us to be a volunteer! We’re a non-profit (赢利的) organization. We have volunteer jobs of all ages. Anyone, from twelve-year-old children to people in their seventies can become a volunteer.

You can help people in many ways. Schools need help with taking care of children while parents are working. Hospitals need volunteers to look after children while their parents are seeing a doctor. Animal lovers can help take care of those dogs and cats without homes. There is something for everyone.

“As a volunteer, I don’t want to get anything. Seeing the children’s happy faces, I’m happy, too.” Said Carlos Domingo, an old woman of 62. “I often played computer games in my spare time before. Now I help older people learn how to use computers.” said another volunteer at the age of 18.

If everyone helps out a bit, we’ll have a better world to live in. Interested? Call us 1-800-555-5756 or visit our website: www.activol.com.

小题1:When do the volunteers help others?

A.In their spare time.

B.At weekends

C.On weekdays.

D.In the evenings.小题2:_____ can be a volunteer.

A.Children

B.Old women

C.Anyone aged 12-70

D.Young people小题3:Volunteers want to get _______ when they help others.

A.money

B.computers

C.everything

D.nothing小题4:Carlos Domingo does volunteer work with ______.

A.animals

B.children

C.computers

D.older people小题5:We can read such a passage ______.

A.in a newspaper

B.in a storybook

C.in a picture book

D.in a textbook

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肺水肿()。

A.弥漫干啰音

B.局限干啰音

C.局限湿啰音

D.双肺满部湿啰音

E.双肺底有湿啰音

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环境噪声对健康有害,它主要来自交通、工业生产、建筑施工的社会等四个方面。

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