欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

1 

Just as the world’s most respected scientific bodies have confirmed that the world is getting hotter, they have also stated that there is strong evidence that humans are driving the warming. Countless recent reports from the world’s leading scientific bodies have said the same thing. For example, a 2010 summary of climate science by the Royal Society stated that: “There is strong evidence that the warming of the Earth over the last half-century has been caused largely by human activity.”

The idea that humans could change the planet’s climate may be counter-intuitive, but the basic science is well understood. Each year, human activity causes billions of tons of greenhouse gases to be released into the atmosphere. As scientists have known for years, these gases hold heat that would otherwise escape to space, wrapping the planet in an invisible blanket.

Of course, the planet’s climate has always been changing thanks to “natural” factors such as changes in solar or volcanic activity, or cycles relating the Earth’s going around the sun. According to the scientific literature, however, the warming recorded to date matches the pattern of warming we would expect from a build-up of greenhouse gas in the atmosphere – not the warming we would expect from other possible causes.

Even if scientists did discover another reasonable explanation for the warming observed so far, that would beg a difficult question. As Robert Henson puts it in The Rough Guide to Climate Change, “If some newly discovered factor can account for the climate change, then why aren’t carbon dioxide and the other greenhouse gases producing the warming that basic physics tells us they should be?”

The only way to prove with 100% certainty that humans are responsible for global warming would be to run an experiment with two identical Earths – one with human influence and one without. That obviously isn’t possible, and so most scientists are careful not to state human influence as an absolute certainty.

1. In most scientists’ opinion, the global warming is mainly caused by ________.

A. solar activity                                                 

B. volcanic activity      

C. the Earth’s going around the sun                  

D. human activity

2.. The text is developed by ________.

A. giving typical examples

B. following the order of space

C. analyzing a theory and arguing it

D. comparing and finding differences

3. The underline word “identical” means ________.

A. totally different                                                      

B. exactly the same

C. extremely important                                      

D. relatively independent

4. Which of the following can be the best title?

A. Are All the Scientists Really Scientific?

B. Where Is Global Warming Leading Us to?

C. Are Humans Definitely Causing Global Warming?

D. What’s Relation of Global Warming and Greenhouse Gases?

1 

John Steinbeck once said, “All Americans believe they are born fishermen. For a man to admit to a distaste in fishing would be like denouncing (公開指責) mother – love or hating moonlight.”

I can’t say that I’m the biggest John Steinbeck fan. Actually, the only thing I can ever remember reading by him was “The pearl” when I was in middle school, but I couldn’t agree more with the man when it comes to fishing. Whether I am on a boat in the middle of the Lay Lake, fishing off the shores of the Florida Keys for tarpon or catching rainbow trout in the Shoshone River of Wyoming, fishing is my life.

According to the American Sports Fishing Association, the fishing industry brings in more than $ 116 billion per year from fishermen across the country.

Though a beautiful picture to imagine, fishing is much more than that. Fishing is a way of life for many people and a way to escape everyday stress. Being a fisherman makes me a member of a wonderful group of people extending to all walks of life. Even President Obama can be found fishing on his farm in Texas with his good friend Roland Martin when the job gets too stressful.

I can remember fishing with my grandfather when I was 5 years old on his boat at Lake Mitchell. Although I didn’t understand what I was doing, I did know that my grandfather was happy and that made me happy. Since then I’ve spent the past 16 years on the rivers and lakes of Alabama.

After days of practice, before and after work, I slowly developed an understanding of fishing. My boss, Ric Horst, took me back to the Shoshone, and I managed to bring in a 19–inch cutthroat trout. Fishing with Ric was a life–changing experience for me. He not only showed me how to fish correctly, but also told me how fishing could be a way to escape your problems.

Since then, prime–time season seems to take forever to arrive.

Now, with the ending of February and beginning of March in sight, the excitement of heading out Lake Tuscaloosa or Lake Lurleen before classes and catching something has finally returned.

1.What John Steinbeck said in the first paragraph implies that ______________.

         A．Americans are believed to be the offspring of fishermen

         B．it is unthinkable for an American to admit his dislike of fishing

         C．a(chǎn)ll Americans are expert at fishing

         D．those who dislike fishing would not love their mother

2.．The writer came to understand the real meaning of fishing ______________.

         A．when he was reading “The pearl” by John Steinbeck

         B．when he went fishing with his grandfather at Lake Mitchell

         C．a(chǎn)fter he had spent 16 years on the rivers and lakes of Alabama

         D．a(chǎn)fter he went fishing with his boss, Ric Horst on the Shoshone

3.What can be inferred from the text?

         A．The author is at most 21 years old.

         B．The author regards fishing as a very important part in his life.

         C．The author agreed with John Steinbeck the most when he was in middle school.

         D．President Obama often goes fishing in public in order to collect idea for his job.

4.．According to the author, __________________.

         A．people can get to know VIPs when fishing.

         B．people can smooth away all the troubles by fishing

         C．Fishing is a way of communication

         D．Fishing is a way to make a living for most American people

5.．What is the purpose of the writing?

         A．To describe the writer’s experience and understanding of fishing.

         B．To explain the reason why so many Americans like fishing.

         C．To make others understand the industry of fishing.

         D．To express his opinions about fishing in different time of the year.

1 

Made in the USA: An Export Boom

In his State of the Union address two years ago, President Obama argued that in order to recover from the economic recession, one of the few things the U．S. needed to do was to export more goods around the world. That night, the president unveiled a new goal: to double U．S. exports over the next five years. It would be an increase that the president said would “support two million jobs in America.”

Most economists dismissed the promise at the time as something unrealistic, but two years later, the U．S. is on pace to meet that goal. American exports are up 34 percent since the president gave that speech, and the number continues to rise.

Competitive In A Global Market

Marlin Steel, a metal working business in Baltimore, makes parts that ship all across the world.“ We export to 36 countries，” owner Drew Greenblatt tells All Things Considered Host Guy Raz. “We're working around the clock, and we're growing.”

It's not just advanced manufacturing exports on the rise, but pork, cattle and all kinds of agricultural exports are up as well. Even American craft beer has found an export market.

Flying Dog CEO Jim Caruso says that increasingly, people all over the world are trying the beer from the Maryland-based brewery. Caruso says，“Even in those top beer-producing countries, a competitive American product is finding a market.”

Services Are Exports, Too

Another place exports are coming from is New York City—in particular, the 30^th floor of a Manhattan skyscraper on 5^th Avenue and 52^nd Street. That's where the consulting firm Kurt Solomon lies. It doesn't actually produce a product for export; it provides management advice and strategy.

“Four out of every five Americans is now employed in the service industry，” the nation's top trade official, Ron Kirk says, “Services are a significant part of our exports, and make up about a quarter of our exported goods.” These services can include everything from legal consulting, finance, information technology and even engineering.

And There Are Other Factors

So why has there been an increase of more than 30 percent for exports in almost everything? Part of the increase, at least for the manufacturing side, is due to better technology, says Tyler Cowen, an economist. “A lot of it is being driven by smart machines，” he tells Raz，“The U．S. has high wage rates, which is a disadvantage, but if machines are doing a lot of the work, that doesn't matter.”

China factors a lot in America's export economy, too. “Wages in China have been going up as the country becomes more productive. Thus China is losing the cheap labor advantage it has held for some time.” Cowen says.

Will Jobs Grow, too?

“Companies have become more productive by dismissing workers and lowering costs.” Cowen says, “So I don't view exporting as a way of creating a very large number of jobs, but it will create more profits.”

So not every business or worker is necessarily benefiting from the export boom in the U．S., and Cowen says that could ultimately lead to a polarization(兩極) of economic outcomes.

Made In the USA: An Export Boom

1 

北京某家政服務(wù)公司推出了“高考保姆”服務(wù)�！案呖急Ｄ贰币话阋�有本科學歷，他們既要輔導(dǎo)考生的薄弱學科，也要給考生做飯、洗衣服等。此項服務(wù)在社會上引起了不同的反響�，F(xiàn)在請你結(jié)合此事并根據(jù)下面表格內(nèi)容用英語寫一篇短文。

注意：

1. 對所給要點逐一陳述，可適當發(fā)揮，不要逐句翻譯。

2. 詞數(shù)150左右，開頭已經(jīng)寫好，不計入總詞數(shù)。

A domestic service company in Beijing provided “Gaokao nannies” for students who will take part in the college entrance examination. The nannies can not only tutor the students in their weak subjects but also wash clothes and cook meals for them.                              

Young students are______ not to smoke both in and out of school.

More and more rich people have promised to ______ their wealth after death to help the poor and the disabled.

Immediately, the people around made_________ to hospital.

After work I went to the box office to buy the tickets for Kungfu Panda 2, only to be told there was ______ left．

This is such a letter ____came last night．

______ number of people who use English as ______ second language is increasing in China.