生态系统的物质循环发生在（） A.生物群落中 B.生产者和消费者之间 C.生产者和分

阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。

                              A

You probably know who Marie Curie was,but you may not have heard of Rachel Carson.Of the outstanding ladies listed below,who do you think was the most important woman of the past 100 years?

Jane Addams(1860-1935)

Anyone who has ever been helped by a social worker has Jane Addams to thank.Addans helped the poor and worked for peace. She encouraged a sense of community(社区)by creating shelters and promoting education and services for people in need In 1931,Addams became the first American woman to win the Nobel Peace Prize.

Rachel Carson(1907-1964)

If it weren’t for Rachel Carson, the environmental movement might not exist today.Her popular 1962 book Silent Spring raised awareness of the dangers of pollution and the harmful effects of chemicals on humans and on the world’s  lakes and oceans.

Sandra Day O’Connor(1930-present)

When Sandra Day O’Connor finished third in her class at Stanford Law School, in 1952,she could not find work at a law firm because she was a woman. She became an Arizona state senator(参议员) and ,in 1981, the first woman to join the  U.S. Supreme Court. O’Connor gave the deciding vote in many important cases during her 24 years on the top court.

Rosa Parks(1913-2005)

On December 1,1955,in Montgomery,Alabama,Rasa Parks would not give up her seat on a bus to a passenger. Her simple act landed Parks in prison.But it also set lff the Montgmery bus boycott. It lasted for more than a year, and kicked off the civil-rights movement. “The only tired I was, was tired lr giving in,”said Parks.

What is jane Addams noted for in history?（）

A. Her social work.

B. Her lack of proper training in law.

C. Her efforts to win a prize.

D. Her community background.

允许出现重复字段值的索引是

A．侯选索引和主索引

B．普通索引和惟一索引

C．侯选索引和惟一索引

D．普通索引和侯选索引

Some say the Internet will kill off papers. Others say not so fast.

Are newspapers dying?

That’s the heated debate these days. Many say the disappearance of the daily paper is just a matter of time. The future of journalism is in news websites, not newsprint.

However, others say, newspapers have been with us for hundreds of years, and while all news may be online some day, papers can exist for some time.

So who’s right? I’ll outline the arguments on both sides, and then you can decide.

Newspapers Are Dead

Newspapers are in trouble. Circulation is dropping, display and classified ad income is drying up, and the industry has experienced a hard time. Big metro papers like the Rocky Mountain News have stopped operating, and even bigger newspaper companies like the Tribune Co. go bankrupt（破产）.

And where are newspaper readers going? To the Web. A recent study has found that Internet users read online newspapers for an average of 53 minutes per week in 2008. That’s highest level recorded in the eight years when the study has been done.

The study found that 22 percent of users said they stopped their subscription（订阅）to a printed paper or magazine because they could access the same content online.

Some people say the Internet is just a better place to get the news. “On the Web, newspapers are live, and they can supplement（增补）their coverage with audio, video, and the valuable resources of their vast contents,” says Geffrey I. Cole, director of the Center for the Digital Future.

小题1:How does the author present the topic to be discussed?

A．By presenting others’ prediction

B．By asking a question

C．By providing opposite opinions

D．By talking about the background小题2:The purpose of writing the text is to _____.

A．try to draw a general conclusion

B．encourage readers to use their judgment

C．compare the advantages of two media

D．invite readers to express their opinions freely小题3:Some readers no longer buy printed newspapers because they _____.

A．want to save money

B．hope to protect the environment

C．don’t care about news

D．can read online newspapers小题4:What’s the advantage of the news website compared with printed newspapers?

A．it provides news vividly

B．the news is more reliable

C．it can reach more readers

D．it is much cheaper in price

HTK-391探测站通信板绿灯闪烁的含义是（）。

A.载波信号

B.发送数据

C.接受数据

D.电源指示

“一带一路”是（）的简称。

A、21世纪海上丝绸之路

B、长江经济带

C、丝绸之路经济带

D、海上丝绸之路