Scientists have long understood the key role that oceans play in controlling the Earth’s climate. Oceans cover 70 per cent of the surface of the globe and store a thousand times more heat than the atmosphere does. What’s newer is the understanding of how this key component(组成部分) of our climate system responds to global warming.

A brake on global warming—for now

One of the oceans’ most important climate functions is absorbing heat and carbon dioxide(CO2), one of the gases that causes global warming. Acting as something absorbing heat, the oceans have absorbed huge amounts of heat and CO2 in the last forty years.

Fujita explains, “the oceans are saving us from faster climate change—they are putting a brake on the climate system.”

“That’s the good news,” he adds. “The bad news is that the oceans only slow the atmospheric warming. Once the oceans come to balance with a greenhouse-gas warmed earth, the extreme heat will remain in the atmosphere and things will get much hotter.” But where and how the oceans release this slowly increased heat is uncertain. And as the ocean stores heat, fragile(脆弱的) underwater ecosystems are struggling.

The most recent scientific report from the Intergovernmental Panel on Climate Change(IPCC) also notes with concern that the ocean is acidifying(酸化) because of increased absorption of atmospheric CO2. and thus causing a threat to shell-forming species.  Sharp increase in CO2 levels will cause further acidification of the ocean.

Currents distributing heat

Another important role the oceans play is that of distributor(散布者). Oceans deliver heat and life-sustaining nutrition around the globe. Just as blood tube bring oxygen and nutrition to cells in the human body, the ocean’s currents carry oxygen, nutrients and heat throughout the Earth. The ocean distributes 25 to 50 per cent of energy the planet receives from the sun. For example, the Gulf Stream carries heat across the Atlantic. This warm current gives northwestern European a milder climate that it would normally have so far north. A change to the ocean’s circulation patterns could throw Europe into a colder period, even as the rest of the world is experiencing warmer temperatures.

1. We can infer from the passage that _______.

2. From the passage we can learn that ocean’s currents _______.

1. produce oxygen and nutrients around     
2. absorb 25-50% of the energy from the sun
3. distribute the atmosphere hotter        

D.  change the ocean’s circulation patterns

3. Which of the following are the results of the ocean absorbing heat and CO2?

a. It causes further acidification.        

b. It makes the atmosphere hotter.

c. It balances the oceans with a green-house gas. 

d. It affects shell-forming species.  

e. It makes the oceans act as a heat sponge.           

f. It controls the Earth’s climate.

4. If the ocean’s circulation pattern changed, ______.

阅读下面短文， 依据以下提示：1）汉语提示，2）首字母提示，3）语境提示，在每个空格内填入一个适当的英语单词，并将该词完整地填写在右边相对应的横线上。所填单词要求意义准确和拼写正确。

请阅读下面英文短诗，用英语写一篇短文，表达你对该诗意思的理解。

要求词数120左右,有标题或无标题均可。

Work while you work, and play while you play.

For that is the way to be happy and gay.

All that you do, do with your might（力量）

Things done by halves are never done right. 

__________________________________________________________________________________________________________________________________________________________________________________________________________________________

____ was most important to her, she told me, was her family.     

A. It                   B. This             C. What         D. As

Animals that could not ____ themselves to the changed environment died and those that could survived.   

A. change           B. adapt            C. devote           D. match

When you retell stories, you can ____ the unimportant details.   

   A. cut off               B. cut out              C. cut up       D. cut down  

She ____ her husband three years ago, and soon ____ a man with a lot of money.  

   A. divorced; married                         B. divorced, got married  

   C. was divorced, was married                 D. was divorced, married

Your performance in the driving test didn’t reach the required standard, ____, you failed. 

   A. in the end                            B. after all       

C. in other words                           D. all the same time

When I met him the other day, it was the first time we ____ each other since we were at school.  

A. saw              B. had seen               C.were seeing         D.have seen

To my surprise, he was lost in thought then and not ____ of my presence at all.

   A. certain               B. fond                 C. sensitive            D. aware