已知函数f(x)=loga(x+1)-loga(1-x),a>0且a≠1. (1

题型:解答题

问题:

已知函数f(x)=loga(x+1)-loga(1-x),a>0且a≠1.

(1)求f(x)的定义域;

(2)判断f(x)的奇偶性并予以证明;

(3)当a>1时,求使f(x)>0的x的取值范围.

考点:函数的奇偶性、周期性对数函数的解析式及定义(定义域、值域)对数函数的图象与性质
题型:解答题

城市控制性详细规划由()组织编制,经本级人民政府批准后,报本级人民代表大会常务委员会和上一级人民政府备案。

A.城市、县人民政府城乡规划主管部门和镇人民政府

B.城市、县人民政府城乡规划主管部门

C.城市、镇人民政府城乡规划主管部门

D.城市人民政府城乡规划主管部门

题型:解答题
如果一次函数y=mx+n与反比例函数y=
3n-m
x
的图象相交于点(
1
2
,2),那么这两个函数解析式分别为______、______.
题型:解答题

You’re finishing up your history homework when your cell phone rings. You’ve got 30 minutes to reach head-quarters, get your equipment packed and receive your task. There’s a lost hiker in the mountains near the edge of town. Your task: find the missing person; provide emergency medical treatment, if necessary; and be prepared to operate 48 hours on your own with only the supplies you carry.

Sounds like some kind of film’s plot? Not if you’re a member of the Arapahoe teen rescue patrol in the suburbs of Denver. About 25 teen guys and girls are active members of this search, rescue and emergency organization, and they know firsthand that you don’t have to be an adult to save lives.

These 9th-through-12th graders are the real deal when it comes to emergency services. In fact, they’re the only teen-commanded patrol in the nation. Sure they have adult advisers to turn to if necessary, but in the field it’s a teen patrol officer calling the shots — sometimes even giving direction to adults.

Members are trained in rock-high-angle,swift-water and avalanche rescue (雪崩施行营救), winter and alpine operation , wilderness life support and emergency care, among other skills. They also regularly ride along with the local fire and police departments, providing support such as security details and evidence searching.

When asked what qualities make a good patrol member, founder and president Stan Bush named good physical conditioning and an interest in helping people. “We put in lots and lots of hours helping people in trouble,” he says. “So if a person is not really interested in doing that kind of thing, he won’t last as a member.”

小题1:In the first paragraph, the author describes ______.

A.a plot in some kind of film

B.a teen patrol member’s life

C.an emergency rescue

D.a lost hiker in trouble小题2:Which of the following is NOT true about the Arapahoe teen rescue patrol?

A.They are trained to have many special skills.

B.They also work with local firemen and policemen.

C.They turn to adults for help sometimes.

D.They think they can save lives only when growing up.小题3:If you want to become a good rescue patrol member, you must ______.

A.be strong and interested in offering help

B.be a 9th-through-12th grader

C.finish your history homework first

D.spend many hours helping people first小题4:What would be the best title for the passage?

A.What qualities make a good patrol member?

B.The Arapahoe teen rescue patrol

C.How to become a rescue patrol member

D.Skills a rescue patrol member needs

题型:解答题

焦虑性神经症常伴有躯体症状,他们是下列哪条?:()

A.口干

B.自主神经功能亢进

C.出汗

D.性功能障碍

E.上腹部不适

题型:解答题

乡镇普通固话用户装移机时限为:()

A.24小时

B.48小时

C.72小时

D.96小时

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