Rising levels of carbon dioxide in the atmosphere are a major cause of climate change, and now a new study has confirmed that atmospheric CO2 is also affecting the ocean chemistry and potentially harm 题目和参考答案——青夏教育精英家教网—

题目内容

Rising levels of carbon dioxide in the atmosphere are a major cause of climate change, and now a new study has confirmed that atmospheric CO2 is also affecting the ocean chemistry and potentially harming sea life.

Montana State University scientist Robert Dore has been researching the water in the Pacific Ocean for almost two decades. “We've been going to the same spot in the Pacific Ocean, and we try and characterize long?term change in the open ocean environment. And one of the key things that we measure is CO2 levels. And we've been able to record this increasing quantity of atmospheric CO2 into the ocean.”

Scientists expected that as atmospheric CO2 increased, more and more of the carbon dioxide would be absorbed into the ocean, affecting the chemical balance of the sea water, with a potentially harmful impact on shellfish and coral in particular.

“As carbon dioxide dissolves in the water, or seawater in this case, it forms a weak acid, carbonic acid，” Dore explains. “And therefore, as the concentration of CO2 in the atmosphere goes up and that exchanges with the surface seawater, it drives the PH down, and makes it more acidic.”

The seawater samples Dore and his colleagues have analyzed confirm what the theory predicts.

The effect was particular striking at about 250 meters down, and again at 500 meters. Dore and his colleagues came up with two possible explanations. It could be that surface water picked up CO2 and then moved to those depths. Or there could be a biological explanation.

“It's important to realize that the oceans are really becoming acidic. And it can have negative impacts on a whole variety of sea life from fish to coral. It's potentially catastrophic.”

1.What can be the best title of the passage?

A．Climate Change Affecting Seawater

B．Oceans Becoming More Acidic

C．Sea Life Facing Danger

D．Scientist Researching Seawater

2.With the increase of atmospheric CO2，________.

A．the surface water is becoming warmer

B．more corals will appear in the sea

C．the PH of the ocean out here has been increasing

D．the chemical balance of the seawater is affected

3.Which of the following shows the process of the impact of atmospheric CO2 on sea life?

a．Sea life is endangered.

b．CO2 goes into the surface water.

c．The ocean chemistry is affected.

d．CO2 decreases the PH and makes the seawater more acidic.

e. CO2 levels in the atmosphere go up.

A．a→e→b→c→d B．e→d→c→b→a

C．e→b→c→d→a D．a→b→c→d→e

练习册系列答案

相关题目

● Cliffs of Moher, Ireland

Stretching for five miles along Ireland 5s western coast, the Cliffs of Moher are a sight more than 300 million years in the making. At their highest, the cliffs soar an impressive 702 feet above the Atlantic Ocean, offering the million visitors who visit each year incredible views sure to leave hearts racing both from the beauty and the height.

● White Cliffs of Dover, UK

These famous cliffs along England’s south-eastern coast are as rich in history as they are in beauty. They stand tall along the Strait of Dover, separating England from France and continental Europe. During World War I, the first bomb to hit the UK fell in Dover, and it served as a prominent location during WWII as well. And nowadays, the city is the best known for the beauty of its chalky white cliffs.

● Mount Thor, Canada

The name Mount Thor may inspire fear or respect — as well it should, considering this is the steepest, tallest cliff in the world. Thor reaches an astonishing 4?101 feet above sea level, and the utter greatness of its vertical incline kept it from being successfully gone up until 1965. Today, it remains a challenging and popular place for rock climbers. '

● Cliffs of Etretat, France

Located along France’s Alabaster Coast, these cliffs offer more than just steep walls. Climb to the top and you’ll have views of arched rock formations, as well as scenery that inspired the famous painter Claude Monet. At various points along the cliffs5 80-mile stretch, you can spot natural sculptures that are said to resemble an elephant, among other things.

1.The purpose of the author is to ^

A. introduce some of the world’s most amazing cliff views

B. advise people to climb rocks in their free time

C. ask people to explore why the cliffs are so steep

D. call on people to protect our environment

2.If you want to challenge yourself as a rock climber, the t choice is

A. Cliffs of Etretat B. White Cliffs of Dover

C. Ckiffs of Moher D. Mount Thor

3.The beauty of the chalky white cliffs can be enjoyed by visiting .

A. the Atlantic Ocean B. Dover

C. Alabaster D. the Strait of Bass

4.We can learn from the passage that

A. Claude Monet got his inspiration partly from Cliffs of Dover

B. Thor soars an amazing 702 feet above sea level

C. visitors to Cliffs of Dover are impressed by its history

D. natural sculptures are commonly seen along most cliffs

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。

There are many factors which may have an influence on adults and children being able to lead a healthy life.

1. Often, both parents work outside the home. Children are expected to take on more responsibility at home to help their parents. They also have sporting and leisure activities as well as school expectations.

The business also adds another factor: The need to use cars to get from one place to another quickly. 2. Computers, DVDs, CDs, television,PlayStations and Xboxes have become major leisure activities, rather than traditional more active pursuits. This has led to a lifestyle of less exercise.

3. Unfortunately, they also promote fast food which fits easily into busy lifestyles. It is much more convenient at times to buy a quick take away rather than prepare a meal. The media constantly bombard (轰炸) their audience with “perfect” body images, the need to buy the most fashionable clothes, the most up-to-date computer games, the best places to visit and the best things to do.

Environments vary. 4. This can be harmful to people who suffer from breathing difficulties. Environments where passive smoking is unavoidable make it difficult to lead a healthy life.

5. Any person who wants to be healthy will find a way to be healthy if he/she is motivated enough!

A．The media provide entertainment and information.

B．Advertisements play an important role in people's life.

C．The important one is motivation or the desire to be healthy.

D．Today, society places a lot of emphasis on technology.

E．People are living in a water-polluted environment.

F．We may be exposed to pollution, such as cigarette smoke.

G．Nowadays, people are very busy.

书面表达

某中外合资企业在一家英文报上登了一则广告（advertisement），招聘一名秘书，基本条件如下：

1、年龄不超过25岁，未婚；

2、身体健康。身高要求：男性1.70米以上，女性1.60米以上；

3、高中以上文化程度；

4、有较好的英语基础，英语口语能力强者优先录用；

5、擅长写作，具有从事文秘(secretary)工作的能力。

假如你叫王强，看了广告后想求此职。请用英语写一封求职信，针对招聘条件介绍自己的情况。

Dear Sir,

Sincerely yours,

Wang Qiang

In the fall of 1985, I was a bright?-eyed girl heading off to Howard University, aiming at a legal career and dreaming of sitting on a Supreme Court bench somewhere. Twenty--one years later I am still a bright?-eyed dreamer and one with quite a different tale to tell.

My grandma, an amazing woman, graduated from college at the age of 65. She was the first in our family to reach that goal. But one year after I started college, she developed cancer. I made the choice to withdraw from college to care for her. It meant that school and my personal dream would have to wait.

Then I got married with another dream: building my family with a combination of adopted and biological children. In 1999, we adopted our first son. To lay eyes on him was fantastic—and very emotional. A year later came our second adopted boy. Then followed son No.3. In 2003, I gave birth to another boy.

You can imagine how fully occupied I became, raising four boys under the age of 8! Our home was a complete zoo—a joyous zoo. Not surprising, I never did make it back to college full?time. But I never gave up on the dream either. I had only one choice: to find a way. That meant taking as few as one class each semester.

The hardest part was feeling guilty about the time I spent away from the boys. They often wanted me to stay home with them. There certainly were times I wanted to quit, but I knew I should set an example for them to follow through the rest of their lives.
In 2007, I graduated from the University of North Carolina. It took me over 21 years to get my college degree!

I am not special, just single?-minded. It always struck me that when you’re looking at a big challenge from the outside it looks huge, but when you’re in the midst of it, it just seems normal. Everything you want won’t arrive in your life on one day. It’s a process. Remember: little steps add up to big dreams.

1.Why did the author quit school in her second year of college?

A. She suffered from a serious illness.

C. She wanted to study by herself.

B. She decided to look after her grandma.

D. She fell in love and got married.

2.What can we learn about the author from Paragraphs 4 and 5?

A. She wanted to remain a full?time housewife.

B. She was too confused to make a correct choice.

C. She was busy yet happy with her family life.

D. She ignored her guilty feeling for her sons.

3.What does the author mostly want to tell us in the last paragraph?

A. Every coin has two sides.

C. Failure is the mother of success.

B. Well begun, half done.

D. Little by little, one goes far.

4.Which of the following can best describe the author?

A. Ambitious and sensitive.

C. Caring and determined.

B. Innocent and single?minded.

D. Honest and responsible.

完形填空

阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。并在答题卡上将该项涂黑。

I was successful at my job. It was not easy, but it ________ me and my family a wonderful lifestyle. I’d worked for the same company for twenty years. ________ , one afternoon last May, I was called to the office, and it was ________ explained to me that they were letting me go. I just sat there ________ they talked on and all I could think was, “I’ve ________ .” I’d been so well respected; ________ I was of no value.

For six weeks, I was in a very ________ place. I wandered around my house like a zombie（僵尸）. I could ________ things needed doing, but would not do anything. My beliefs in looking forward and seeing the positive in everything ________ me.

Then, in late June, my youngest son’s football team made the city cup final. The year before, he’d been very sad when I ________ the same final, so he was ________ when I told him I’d go. Not only did they win, but the look on his face as he saw me ________ him on was unbelievable. The whole summer I attended match after match and performances of my elder son’s band — I ________ went to another city to watch him play. These moments were so ________. My life had been so much devoted to ________ for so long, and I felt ________ that my sons were happy to welcome me into their world.

________ , being unemployed gave me back a sense of purpose — I was someone’s mum! I felt a sense of being ________ again. Now I feel more positive about my professional ________ and I’m getting on better with my family than I ever have. Losing my job has made me realize just how ________ it is to achieve real balance in life.

1.A. affordedB. promisedC. showedD. left

2.A. ThereforeB. AnyhowC. HoweverD. Otherwise

3.A. quicklyB. gentlyC. partlyD. easily

4.A. untilB. afterC. asD. so

5.A. finishedB. changedC. triedD. failed

6.A. finallyB. immediatelyC. suddenlyD. shortly

7.A. secretB. quietC. lonelyD. dark

8.A. seeB. getC. suggestD. understand

9.A. defendedB. desertedC. directedD. disturbed

10.A. watchedB. missedC. lostD. won

11.A. disappointedB. worriedC. honouredD. delighted

12.A. cheeringB. takingC. leadingD. passing

13.A. justB. evenC. stillD. almost

14.A. hopefulB. strangeC. meaningfulD. difficult

15.A. workB. familyC. matchesD. performances

16.A. successfulB. thoughtfulC. thankfulD. peaceful

17.A. UnexpectedlyB. DoubtfullyC. DisagreeablyD. Naturally

18.A. employedB. valuedC. comfortedD. encouraged

19.A. educationB. futureC. relationshipD. experience

20.A. importantB. interestingC. simpleD. surprising

书面表达

假定你是星光中学的高中毕业生李华,母校将为高一新生举办主题为“What to learn in senior high school?”的英语沙龙活动,特邀请你结合自身经历谈谈自己的体会。请根据以下提纲准备一份英语发言稿。

1.学会学习:方法、习惯等;

2.学会做人:真诚、友善等;

3.其他方面:考生自拟。

注意:1.词数120个左右;

2.发言稿开头和结尾已给出,不计入总词数。

Good morning, everyone! It is my honor to be here to share with you my opinions on what to learn in senior high school.

____________________________________________________________________________

Thank you!

While astronauts in space get to do many exciting things，they miss out on ordinary things that we all take for granted—being able to walk on firm ground，hanging out with family and digging into a slice of hot steaming pizza． Though not much can be done about the first two things，there may soon be a solution to the third one，thanks to this cool 3-D pizza printer！

About a year ago，NASA offered $125 ,000 to Anjan Contractor， a 3-D technology expert，to build a device（设备）that would allow astronauts to make pizza on demand． The mechanical engineer promised that his invention would produce pies in large quantities that looked， tasted and even smelled like pizza made in common ovens．

Late last year， the engineer presented a video of his first prototype（原型）that begins by creating a single slice of dough（面团）that is cooked and printed at the same time．Then comes the tomato “sauce” — a mix of tomato powder，oil and water and finally，a protein slice that resembles cheese．While the video doesn’t show the baking process，the inventor says that once the pizza is printed，it can be ready to be consumed in 7 seconds．

While the pie in the video looks delicious enough to attract any pizza lover，Anjan Contractor is far from ready for astronauts．That’s because he still has to find a solution to make the food container in the printer last for 30 years．Though that may sound unrealistic，actually it is not．

Anjan Contractor believes that the only way that is possible is that the water is removed from all the ingredients（配料）and then they are reduced to the powder form．This，as you can imagine，will not be so easy．But，while the printer may not be ready for space，it certainly looks ready enough for people on earth．Hopefully，NASA and Contractor will consider selling it to those not fortunate enough to go to Mars！

1.Why does the author mention the things that astronauts in space cannot do？

A． To ask us not to take common things for granted．

B． To show they live a difficult life there．

C． To show their life is boring in space．

D． To introduce the topic of the text．

2.NASA offered $ 125，000 to Anjan Contractor mainly to _______．

A． create some new type of 3-D printer

B． attract more companies to work for NASA

C． help astronauts in space enjoy fresh pizza one day

D． produce pizza in large quantities to earn great profits

3.The biggest challenge that Anjan Contractor is faced with now is probably that _______．

A． he has no money left to go on with his research

B． the pizza doesn’t seem appetizing to pizza lovers

C． he has no way to make pizza that can last for thirty years

D． he cannot make the food container last for decades

4.What’s the best title of the passage？

A． NASA is trying its best to help astronauts eat better

B． Astronauts may soon be able to enjoy steaming hot pizza

C． NASA is working on making pizza for common people

D． A 3-D pizza printer has been used to make pizza

Umbrella is what we easily forget and leave behind in our daily life． When the weather is fine, we certainly don’t think of it; only when it's raining, we’ll carry it purposefully． But as soon as the rain stops, most likely we’ll forget1.we’ve put it． It has to wait patiently and pitifully for2.owner to claim it, otherwise it’ll remain alone as a deserted umbrella．

Once I suddenly found my longtime3.(use) umbrella “disappeared”． I really got lost and regretted quite some time4. my own carelessness．

Several days later, out of my 5. (expect), I saw it quietly stand in a corner of the house where I worked． I was extremely glad to regain it． Looking carefully at it, though it was so familiar 6.me, I found for the first time its wooden handle 7.（wear）out as a result of repeated rain-wash for years． I sought for it only when I needed it． It occurred to me that I should have paid 8. (much) attention to it．

It sets me thinking． Around us there are always people giving us support in silence just like9. umbrella that protects us from the rain or any wretched weather． Will gou think of those individuals 10.have helped you get through difficlty when you are leading a comfortable life?

试题分类