已知函数f(x)=logax+1x-1.(Ⅰ)求f(x)的定义域;(Ⅱ)判断f(

题型:解答题

问题:

已知函数f(x)=loga
x+1
x-1

(Ⅰ)求f(x)的定义域;
(Ⅱ)判断f(x)的奇偶性并证明;
(Ⅲ)求不等式f(x)>0的解集.
考点: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
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Do you read newspapers in modern times while we have TV and other media? The first newspaper was written by hand and put up on walls in public places. The earliest daily newspaper was started in Rome in 59 BC. In the 700s the world’s first printed newspaper was published. Europe didn’t have a regularly published newspaper until 1609, when one was started in Germany.

The first regularly published newspaper in English was printed in Amsterdam in 1620. In 1621, an English newspaper was started in London and was published once a week. The first daily English newspaper was Daily Current, which came out in March 1702.

   In 1690, Benjamin Harris printed the first American newspaper in Boston. But not long after it was first published, the government stopped the paper. In 1704, John Campbell started Boston Newspaper, the first newspaper published daily in the American Colonies. By 1760, the colonies had had more than thirty daily newspapers. There are now about 1,800 daily papers in the United States.

   Today, as a group, English language newspapers have the largest circulation in the world. But the largest circulation for a newspaper is that of the Japanese newspaper Asahi Shimbun. It sells more than eleven million copies every year.

小题1:The first regularly printed European newspaper was started ______.

A.in Rome in 59 BC  

B.in Germany in 1609   

C.in Amsterdam in 1620   

D.in England in 1621小题2:The first daily English newspaper was started in _______.

A.1702 

B.1760  

C.1620 

D.1621小题3:What can we learn from the passage_______?

A. The earliest daily printed newspaper was started in Rome in 59 BC.

B. The first regularly published English newspaper was printed in Boston.

C. The first daily English newspaper was printed in the American Colonies.

D. The first American newspaper was stopped before 1704.

小题4:Which of the following is TRUE according to the passage_______?

A. Newspapers have the longest history in the United States.

B. One English language newspaper has the largest circulation in the world.

C. The first English newspaper was printed in Rome in 59 BC.

D. There are all kinds of newspapers all over the world today.

小题5:What is the best title of the passage_______?

A.History of newspapers.  

B.History of daily newspapers.

C.The beginning of daily newspapers.  

D.The beginning of newspapers.

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—Is he Li Ping?

—Yes, ______.[ ]

A. I'm

B. he's

C. he is

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尘肺病的病变轻重和发展速度主要由什么决定()。

A.粉尘的浓度和接触时间

B.游离二氧化硅含量

C.粉尘在肺内的蓄积量

D.上述中的A和B

E.上述中的B和C

题型:解答题

调频阻波器应检验哪些项目?

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主题数据库是一类重要的数据环境,以下是关于数据环境特点的描述。
Ⅰ.简单、容易实现 Ⅱ.具有较低的维护成本
Ⅲ.提高了应用开发效率Ⅳ.与应用项目对应
Ⅴ.独立于应用项目
其中属于主题数据库优点的是

A.Ⅱ、Ⅲ和Ⅳ

B.Ⅱ、Ⅲ和Ⅴ

C.Ⅰ、Ⅲ和Ⅳ

D.Ⅰ、Ⅲ和Ⅴ

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