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（溶解） 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 Dore and his colleagues have analyzed confirms 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."
53．What can be the best title of the passage?
A．Sea Life Facing Danger B．Climate Change Affecting Seawater
C．Oceans Becoming More Acidic D．Scientist Researching Seawater
54．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．CO2decreases the PH and makes the seawater more acidic．
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e．CO2 levels in the atmosphere go up．
A
In April 2014，the world's oldest known message in a bottle was discovered floating in the Baltic Sea. It had spent 101 years lost in the ocean！The message was finally sent to the author's granddaughter.
A German fisherman named Konrad Fischer found the brown bottle near Kiel，Germany. He said he nearly threw the bottle back into the water after pulling it out of a fishing net. Then he noticed something inside.
The bottle in good condition contained a Danish postcard with two German stamps，dated May 17，1913. Although dampness had made most of the writing illegible（字迹模糊的），the readable part of the message asked whoever found it to return it to an address in Berlin. It even contained two stamps to pay for postage.
From the address，researchers found that the postcard was written by a man named Richard Platz，who was 20 years old when he wrote the message. While he was hiking on the Baltic coast with a nature appreciation group，he threw the bottle into the sea. Then the researchers began a search for any living relatives of his. Sure enough，they were able to find his 62-year-old granddaughter，Angela Erdmann，who still lives in Berlin.
“It was almost unbelievable，”Erdmann said upon being presented with her grandfather's bottle and message.“That was a pretty moving moment. Tears rolled down my face."
Erdmann never knew her grandfather，who died in 1946，but says that the discovery of the bottle has made her want to learn more about him.
The bottle remained on display at the International Maritime Museum in Hamburg until May 1．After that，the researchers examined the postcard and tried to figure out the meaning of the rest of the message.
Previously，the oldest message found in a bottle spent nearly 98 years at sea and was discovered in April 2012，according to Guinness World Records.When Konrad Fischer picked up the bottle from the sea， ．
| A．he thought it would bring him good luck |
| B．he noticed the postcard inside immediately |
| C．he decided to uncover the secret of the bottle |
| D．he wanted to throw it back into the sea at first |
Why did Richard Platz throw the bottle with the message into the sea?
| A．He expected his granddaughter could find the postcard. |
| B．He wished the finder would send the postcard to his home. |
| C．He believed his postcard would be kept secret at sea forever. |
| D．He thought he could make friends with the finder of the bottle. |
What can be the best title for this passage？
| A．The finding of a floating bottle at the sea |
| B．A one-century-old letter to a granddaughter |
| C．The world's oldest message in a floating bottle |
| D．The oldest Danish postcard in a floating bottle |
Speaking from my past experience, it is very difficult to find good friends that you can trust but once you have found them, they are worth keeping forever! Therefore, I think friendship is the most important relationship that anybody could have.
The qualities I look for in a friend are a good sense of humor but sensitivity when it matters. Also that friend would have to be strong-minded and highly spirited. I think that these qualities are the key qualities to look for in a good friend.
Even the strongest friends can still have arguments, although usually about more serious topics, rather than the usual teenage childish arguments. Some matters can seriously affect a friendship. If one of your friends started experimenting with harmful and dangerous drugs, what would you do ? A good friend would try to help as much as possible, whereas a bad example of a friend would simply shrug(耸肩) and turn a blind eye.
Not only the bad things affect friendship ---- good activities do too. Such as bonding with one another, not just by going out on a night with them but by spending quality time with them and talking to each other, which indicates a good ability to communicate. This is a key aspect of a good friendship.
Good friends do not always have to be in the same age group as you. I have a good friend and she is 47 years old and I am 16.
Unfortunately, some people lose contact with their friends as they grow older, which is a sad way to lose a good friend.
I think friendship is one of the most important things in life because if you have no friends you will have no happiness.According to the author, true friendship _______.
| A．is easy to get |
| B．deepens with time |
| C．needs management |
| D．affects one’s happiness |
Paragraph 3 is mainly about______.
| A．why drugs are bad for teenagers |
| B．problems that will test friendship |
| C．ways that help avoid arguments |
| D．whether a friend is trustworthy |
According to the author, which matters least in friendship?
| A．Age. |
| B．Sensitivity. |
| C．Sense of humor. |
| D．Communication ability. |
Which of the following saying can match the author’s view on friendship?
| A．Old friends and old wines are best. |
| B．A friend without faults will never be found. |
| C．A life without a friend is a life without the sun. |
| D．a friend to everybody is a friend to nobody. |
A new generation addiction is quickly spreading all over the world. Weboholism（网瘾）, a twentieth century disease, affects people from different ages. They surf the net, use e-mail and speak in chat rooms. They spend many hours on the computer, and it becomes a compulsive habit. They cannot stop, and it affects their lives.
Ten years ago, no one thought that using computers could become compulsive behavior that could affect the social and physical life of computer users. Such behavior has seriously affected teenagers and college students. They are likely to log(写日志) on computers and spend long hours at different websites.
They become hooked（着迷） on computers and gradually their social and school life is affected by this situation. They spend all free time surfing and don’t concentrate on homework, so this addiction influences their grades and success at school. Because they can find everything on the websites, they hang out there. Moreover, this addiction to websites influences their social life.
They spend more time in front of computers than with their friends. The relation with their friends changes. The virtual life becomes more important than their real life. They have a new language that they speak in the chat rooms and it causes cultural changes in society.
Because of the change in their behavior, they begin to isolate themselves from society and live with their virtual friends. They share their emotions and feelings with friends who they have never met in their life. Although they feel confident on the computer, they are not confident with real live friends they have known all their life. It is a problem for the future. This addictive behavior is beginning to affect all the world.
The main idea of the passage is about__________.
| A．the cause of weboholism |
| B．the advantage of weboholism |
| C．the popularity of weboholism |
| D．the effect of weboholism |
We can infer from the passage that_______.
| A．weboholism has the greatest effect on teenagers |
| B．students can hardly balance real and virtual life |
| C．people are addicted to games on the Internet |
| D．virtual life is more vivid and attractive than real life. |
Which of the following is NOT true of weboholism?
| A．It contributes to the development of the web. |
| B．The chat room language may change social culture. |
| C．The problem will be getting more and more serious later. |
| D．People addicted to the web often become inactive in real life. |
When I was a child, I often dreamed of the time when I could leave home and escape to the city. We lived on a farm and, in the winter especially, we were quite cut off from the outside world. As soon as I left school, I packed my bags and moved to the capital. However, I soon discovered that city life has its problems too.
One big disadvantage is money---it costs so much to go out, not to mention basics like food and housing. Another disadvantage is pollution. I suffer from asthma(哮喘), and at times the air is so bad that I am afraid to go outside. Then there is the problem of travelling round. Although I have a car, I seldom use it because of the traffic jams. One choice is to go by bicycle, but that can be quite dangerous.
Of course there are advantages. First, there is so much to do in the city, whatever your tastes in culture or entertainment. Besides, there are wonderful jobs and greater chances of moving to a more important job or position. Finally, if you like shopping, the variety of goods is very surprising---and, what is more, shops are often only a short walk away.
Is life better then, in the city? Perhaps it is, when you are in your teens(十几岁) or twenties. However, as you get older, and especially if you have small children, the peace of the countryside may seem preferable. I certainly hope to move back there soon.What was the writer always thinking about when he was a child?
| A．Staying on the farm |
| B．Moving to the countryside |
| C．Leaving home for the city |
| D．Running away from the school |
Which of the following is true about the writer?
| A．He is very old now. |
| B．He is in good health. |
| C．He prefers driving a car. |
| D．He lives in the city now. |
In the passage, the writer tries to _______.
| A．express his opinions about way of life |
| B．describe his life in the countryside |
| C．show an interest in the outside world |
| D．persuade the reader to live in the city |
How is the passage mainly developed?
| A．By inferring |
| B．By comparing |
| C．By listing examples |
| D．By giving explanations |
According to researchers, money can buy happiness, but only if you spend it on someone else．
Spending as little as $5 a day on someone else could significantly bring you happiness, the team at the University of British Columbia and Harvard Business School found.
Their experiments on more than 630 Americans showed they were measurably（适度地） happier when they spent money on others---even if they thought spending the money on themselves would make them happier.
"We wanted to test our theory that how people spend their money is at least as important as how much money they earn," said Elizabeth Dunn, a psychologist at the University of British Columbia.
They asked their 600 volunteers first to rate their general happiness, report their annual income and detail their monthly spending including bills, gifts for themselves, gifts for others and donations to charity（慈善机构）．
"Regardless of how much income each person made, those who spent money on others reported greater happiness, while those who spent more on themselves did not," Dunn said in a statement.
Dunn's team also surveyed（调查）16 employees at a company in Boston before and after they received an annual profit-sharing bonus（奖金） of between $3,000 and $8,000.
"Employees who devoted more of their bonus to pro-social（有益社会的） spending experienced greater happiness after receiving the bonus, and the manner in which they spent that bonus was a more important predictor(预示) of their happiness than the size of the bonus itself," they wrote in their report, published in the journal Science.
They gave their volunteers $5 or $20 and half got clear instructions on how to spend it．Those who spent the money on someone or something else reported feeling happier about it.
"These findings suggest that very minor alterations（改动） in spending allocations（分配） --- as little as $5 --- may be enough to produce real gains in happiness on a given day," Dunn said.According to the passage,_____________.
| A．the more money you spend on others, the happier you are |
| B．spending money on others can bring you happiness |
| C．Elizabeth Dunn is a psychologist from Harvest Business School |
| D．six hundred volunteers took part in the experiment |
The 16 employees mentioned in the passage _________.
| A．were given clear instructions on how to spend the bonus |
| B．had more happiness than the size of the bonus itself |
| C．experienced greater happiness after receiving their bonus |
| D．felt happier after they contributed much of the bonus to charities |
Dunn’s statement suggested that ______________.
| A．those who spent money on others felt happier no matter how much they earned |
| B．those who spent more money on themselves felt happier |
| C．people thought spending money could make themselves happier |
| D．the money spent was as important as the money earned |
The best title of this passage is ___________.
| A．Experiment on Money Spending |
| B．Devoting Your Money to Charities |
| C．Spending Money on Others Makes One Happier |
| D．Bonus and Pro-social Spending |
