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

The associates I hired in my bicycle and lawn mower shop like myself were never perfect; however, they were excellent. Working with them as they improved taught me new ways to show forgiveness, understanding, and patience.

One day the placement officer asked me to interview a young man who was having trouble finding a job. He told me that David was a little shy, did not talk much and was afraid to go on with interviews. He requested that I give David an interview just for practice. He plainly told David that I had no positions open at the time and the interview was just for practice.

When David came in for the interview, he hardly said a word. I told him what we did at the bicycle shop and showed him around. I told David to keep showing up because the number one thing an employer wanted in an associate was dependability.

David was very quiet (he was evaluated as a slow learner in school). Every ten days or so, for weeks after the interview, David walked into the bicycle shop and stood by the front door. He never said a word, just stood by the door.

One day, shortly before Christmas, a large truck came to the shop, packed with 250 new bicycles. It had to be unloaded right away or the driver would leave.

It was raining. Some of my workers (without physical limitations) chose not to brave the weather to get into work, so I was short?handed. It seemed everything was going wrong and on top of it, David came in the front door and just stood there. I looked at him and shouted, “Well, all right! Fill out a time card and help me unload this truck！”

David worked for my bicycle shop for eighteen years. He came to work every day thirty minutes early. He could talk; however, he rarely chose to. He drove my truck and made deliveries. The customers would praise David, saying, “He doesn't talk, but he really shows you how to operate a lawn mower！”

1.The author gave David an interview to ________.

A．give him some practice

B．show sympathy for him

C．find a person who is reliable

D．find a part?time worker in need

2.The author finally hired David because ________.

A．He realized David was dependable

B．there were no other workers in the shop then

C．he needed someone who was willing to work then

D．David kept showing up

3.We can infer from the last paragraph that ________.

A．the author prefers David to be more outgoing

B．the author feels lucky to hire David

C．David has had his character changed through work

D．some customers just play jokes on David

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。

Golf is an outdoor sport in ________ a player attempts to hit a small hard ball ________ a hole in as ________ wings（挥动，击杆）as possible. Players ________ the ball with one of several kinds of long, slender golf clubs. The kind of club ________ on the location and distance ________ the hole. Golf is played on a course that normally is ________ into 18 units, also called holes, of varying lengths and difficulty.

Golf is one of the most ________ outdoor sports in the world. Millions of men, women, and children play golf as an individual or ________ sport, ________ in high school and college competition. Millions more enjoy golf as a ________ of recreation and exercise. Golf is also a popular ________ sport, ________ thousands of fans to tournaments（比赛，锦标赛）. Millions more may watch tournaments ________ television.

________ 20 million Americans play golf every year. About ________ of them are women. The United States has about 14,000 golf courses. About 5,200 are private courses—country clubs and golf clubs ________to members only. Another 6,500 are daily fee ________, which are privately owned facilities that admit the public________ a fee. About 2,200 courses are publicly ________ .

1.A. that B. what C. it D. which

2.A. in B. into C. to D. from

3.A. many B. less C. a few D. few

4.A. play B. provide C. hit D. perform

5.A. depends B. relies C. decides D. discusses

6.A. from B. into C. to D. in

7.A. made B. classified C. separated D. divided

8.A. excited B. common C. popular D. graceful

9.A. singular B. team C. plural D. personal

10.A. which B. both C. that D. so

11.A. play B. format C. form D. method

12.A. spectator B. individual C. team D. performance

13.A. creating B. turning C. driving D. attracting

14.A. by B. over C. with D. on

15.A. Masses of B. More than C. In addition to D. Lots of

16.A. a total B. the half C. the fourth D. four

17.A. available B. similar C. convenient D. familiar

18.A. clubs B. golf C. players D. courses

19.A. of B. for C. to D. by

20.A. admitted B. displayed C. owned D. serviced

单词拼写

根据句意和汉语提示完成下列句子（一空一词）。

1.It’s ____ (典型的) of him to be ready to help those in trouble.

2.Good work _____ (吸引) to every student majoring in literature.

3.The company has been ____ (转变) from a family business to a multi-million-pound operation.

4.All of us like John Smith, because he is very __________ (灵活的) in dealing with relations.

5.Because final exams are coming，most students are under a lot of ________ (压力)．

6.They promised to __________ (加强) the cooperation between the two nations in more fields.

7.Many residents are ___________ (反对) to the plan of building the motorway.

8.Under the _________(情况), it seemed better not to tell him about the accident.

9.I think you’re __________ (绝对地) right.

10.It's still under __________(保修期), so the company will have it repaired.

短文改错

Last Friday we have a discussion about whether it is the only way out for senior students to go to college. Views vary from person to person.

The majority of us consider this very necessary to go to college. They think it can be widen their knowledge and improve their qualities. Only in this way can they find better jobs before graduation. Very few students think it no use go to university, because the tuition is too high for their family to afford. What’s more, it’s rather hard for college graduates to seek satisfied jobs. Thirty percents of the students, however, believe “All roads lead Rome.” Therefore, it doesn’t make some difference whether they go to college or not.

In my opinion, we can better themselves through college education so that we can serve society better in the future.

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.

When __________ to danger and conflict, men tend to increase blood pressure, __________ nervous or anxious .

A. exposed; felt

B. exposed; feeling

C. exposing; felt

D. exposing; feeling

It is clearly stated that regulations __________ everyone in the community, without exception.

A. adjust to

B. adapt to

C. attach to

D. apply to

The doctor thought ___________would be good for you to have a good rest.

A. this

B. that

C. one

D. it