Rising levels of carbon dioxide in the atmosphere are a major cause of climate change, and now a new study has confirmed that atmosphere 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 atmosphere CO2 into the ocean.”
Scientists expected that as atmosphere 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.”What can be the best title of the passage?
| A．Scientist Researching Seawater |
| B．Sea Life Facing Danger |
| C．Oceans Becoming More Acidic |
| D．Climate Change Affecting Seawater |
With the increase of atmospheric CO2, _______.
| A．more corals will appear in the sea |
| B．the chemical balance of the seawater is affected |
| C．the surface water is becoming warmer |
| D．the pH of the ocean out here has been increasing |
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→b→c→d→e | B．e→b→c→d→a |
| C．a→e→b→c→d | D．e→d→c→b→a |
Scientist Robert Dore came to the conclusion based on_______.
| A．the expectation of other scientists |
| B．some former theory |
| C．his research and analysis |
| D．a major cause of climate change |
Children who are brought up by two parents grow up to be cleverer than those raised by just one person, new research suggests. Being with both parents in the earliest years of life leads to a child developing more brain cells, the scientists believe. Being brought up by both parents causes boys to have better memory and learning functions. By contrast, it causes girls to develop improved co-ordination and sociability.
It is believed that babies with two parents tend to get more attention and more stability(稳定), and that they are less likely to suffer emotional distress(悲伤) in the first years of life. This leads to greater brain cell production ------ for boys it is grey matter brain cells that develop and for girls is white matter brain cells.
The researchers from Canada studied mice and experimented by creating one-parent and two-parent family groups. They then measured the offspring’s(后代的) brain cell development from birth to adulthood. Adult mice with the highest number of brain cells turned out to be those who had been brought up by two parents rather than one. As babies they had received more attention and more nursing as both parents took turns to lick and tend to their youngsters, said Dr Samuel Weiss.
As a result, the babies with two parents are less likely to suffer early life hurt which can have a massive impact on how their brains develop in later life, the research shows. However, what did surprise the researchers is that female babies who grew up with both parents turned out to be good single mothers, as if good parenting was passed on.
The researchers said,“ In the mouse model, parenting and the environment directly impacted adult brain cell production. It is possible that similar effects could be seen in other mammals, such as humans.”From the first paragraph we can draw a conclusion that ________.
| A．Girls have better memory and learning functions. |
| B．Boys are better at co-ordination and sociability. |
| C．The benefits vary between the sexes. |
| D．The benefits are the same between the sexes. |
The researchers proved their idea ________.
| A．by questionnaire on parents. |
| B．by experiment on mice. |
| C．by raising babies themselves. |
| D．by experiment on humans. |
The underlined word “impacted” means _________.
| A．destroyed | B．constructed |
| C．influenced | D．disagreed |
What does the passage mainly tell us?
| A．Children brought up by two parents are cleverer. |
| B．Children brought up by single parent are cleverer. |
| C．Children grow up themselves are cleverer. |
| D．Children grow up themselves are more self-confident. |
Right now in China, talks on the street have been about the strange weather and it's raising a lot of concerns. A heavy haze(雾霾) has blanketed many cities in the northern and southern parts of the country in part of an unusual weather system that’s descended on the nation.
The haze stretches over a vast area, from Hebei and Shan-dong Provinces in the north all the way to Zhejiang, Anhui, Jiangsu, Hunan and Fujian provinces in the south. At its worst, the smog is reducing visibility to less than 200 meters and disrupting traffic, both on the ground and in the air. The weather front has also led many to worry about the possible health impacts.
Many cities are waking up to another day covered by a dense haze. In Beijing, drivers have to keep their lights on even though it’s already past eight o’clock in the morning. Even driving at very slow speeds, the roads can still be very dangerous. In some of the worst hit areas, drivers can’t even tell the colors of traffic signals. Authorities have stepped in to close off many highways across the troubled region. In Shandong Province, the highways that are open are backed up for miles. And traffic police have stepped up their patrols.
In the region’s airports, flights information boards have gone red. A huge number of flights have been delayed or cancelled, nearly three hundred in Beijing alone, leaving thousands of passengers stranded. Some are more frustrated than impatient. Passenger from Jinan airport, Shangdong province, said: “I’ve been waiting for more than five hours. It’s Mother Nature, so there’s really nothing we can do.” The airport is urging passengers to confirm with their carrier whether their flight will still take off as scheduled.
Back on the city streets, people are wearing breathing masks to get free from any ill effects. Fog has cleared a little in Shanghai. But damage has already been done. Shanghai resident said: “I’ve been wearing the mask, but still, my throat feels sour and itchy. I think it’s because of the weather.”
The weather forecast predicts a cold front is about to sweep across central and eastern China tomorrow. Many are hoping that this will clear away the depressive haze as well as the harm it brings.The harm the smog caused didn’t include .
| A．reducing visibility to less than 200 meters |
| B．disrupting traffic |
| C．health problems |
| D．heavy fog |
Which of the following is true according to the passage?
| A．Only a small part of China suffered the haze. |
| B．Many highways were blocked up |
| C．All the flights were delayed or cancelled |
| D．The bad weather would last another few days |
When the passenger said “It is Mother Nature”, he had a feeling of .
| A．impatience | B．frustration |
| C．Anxiety | D．curiosity |
The passage is developed by .
| A．making comparisons |
| B．giving examples |
| C．following the time order |
| D．analyzing the causes |
A soldier who lost both his legs after being blown up in Afghanistan is racing a sports car in his hometown this weekend.
Remarkably David Birrell will not only drive the Mazda MX5 but he does without any specially adapted equipment.
Davie, 28, has battled back from terrible injuries after a bomb blew up directly below him. He gave himself first aid and fired at Taliban(塔利班) fighters until help arrived. Davie was always interested in motor sport and after spending weeks in hospital was introduced by Help the Heroes to Mission Motorsport, which helps the wounded recover. The charity(慈善机构) are organizing a major event, Race of Remembrance, at the Anglesey Circuit near Rhosneigr of North Wales in November, and Davie was at the circuit yesterday for an official launch.
He said,“It’s my first time racing on Anflesey. This means everything to me. I loved it straight away, and it gives you something to focus on, to try and stay in front of others. I was boxing since the age of eight and my whole life has been one-to-one competition. But now everything has changed.”
Davie, a corporal（下士）in the Black Watch, was in Helmand in April 2010 when his interpreter stood on the bomb. He said,“I was confused and went blank（空白） for a couple of seconds. There was dust in the air and I couldn’t see. Both legs were still attached but there were massive injuries to my right leg and my left foot was broken.”As the Taliban began firing he returned fire and waited for help. He added,“A medical team came over. I was taken back to Camp Bastion by helicopter. I was there for two days before being flown to hospital in Birmingham.”
He had lost his right leg and the following year had his left leg amputated below the knee, ending the Army career.Davie was wounded _____________ according to the passage?
| A．In Rhosneigr. | B．In Birmingham. |
| C．In Helmand. | D．In Bastion. |
___________can replace the underlined word“ amputated” in the last paragraph?
| A．Cut off. | B．Blew up. |
| C．Focused on. | D．Attached to. |
Davie is most likely to come from ___________.
| A．Afghanistan. | B．the UK. |
| C．the US. | D．Taliban. |
What we know about Davie is that _____________.
| A．Davie was killed by Taliban fighters. |
| B．Davie’s interpreter survived the accident. |
| C．Davie’s legs were blown up immediately. |
| D．Davie might like boxing when he was young. |
What do you do when you need to look something up? Go to the library? Open an encyclopedia（百科全书）? Click onto the Internet? These days, most people go straight to Wikipedia, the online encyclopedia. But how reliable is it?
There is no denying the popularity and usefulness of Wikipedia. It attracts as many as 78 million visitors every month, and the site is available in more than 270 different languages. It’s one of the most comprehensive resources available, which includes almost all details, facts and information that maybe concerned. It's got much more information than an ordinary encyclopedia. The site is updated on a daily basis by thousands of people around the world. Anyone with an Internet connection can log on and edit the contents or add a new page. And you don't need any formal training.
Of course, there are some controls. Wikipedia has a team of more than 1,500 administrators who check for false information. And main targets for harmful comments(such as politicians) are off-limits to public editing. But with more than 16 million articles to keep an eye on, it isn't easy. So, while Wikipedia benefits from being constantly updated with information from all over the world, it's also open to “vandals” (破坏他人财产者).
Some of the damage is easy to notice. One person drew devil horns and a moustache on Microsoft chairman Bill Gates’ photo, while another edited Greek philosopher Plato’s biography to say he was a “Hawaiian weather man who is wildly believed to have been a student of‘Barney the purple Dinosaur’ and to have been deeply influenced by his dog, Cutie”.
But other things are harder to spot. The most common form of vandalism involves adding tiny items of false information into the biography of a famous person. Unbelievably, some of this misinformation has appeared in newspapers, with The Daily Mail, The Guardian and The Independent all having fallen victim to the dirty tricks. For example, in an article about British comedian Sir Norman Wisdom, one newspaper claimed that he co-wrote Dame Vera Lynn’s wartime hit There’ll be bluebirds over the White Cliffs of Dover. He did no such thing. And in another article, it was reported that TV Theme tune composer Ronnie Hazlehurst had written the S Club 7’s hit Reach. Once again, not true.
So, if you are going to use any information from Wikipedia, make sure you double-check it first.Which of the following would the author most probably agree with?
| A．Before using the information from Wikipedia, one should first check it. |
| B．Though popular and wildly used, Wikipedia provides little reliable information. |
| C．It is understandable that some people add false information to Wikipedia. |
| D．Updated on a daily basis, any information from Wikipedia is reliable. |
We can learn from the passage that _______________ .
| A．because of its popularity, 78 million people from 270 countries visit Wikipedia monthly |
| B．Wikipedia is the most comprehensive resource with all information we need |
| C．anyone who has access to the Internet can edit any contents of Wikipedia as they like |
| D．the primary job of the administrator is to make sure true information is conveyed |
What does the underlined part “off-limits” in paragraph 3 mean?
| A．Not convenient | B．Not welcome |
| C．Not accessible | D．Not boundless |
What’s the writer’s attitude to Wikipedia?
| A．Negative | B．Worried |
| C．Indifferent | D．Objective |
The Hunan Satellite TV(HNTV) show “Where are we going, Dad?” is a big hit. Many famous stars brought their children to a strange village alone, and they had to spend 72 hours with their children there. The program fully showed us a modern version of the “how to be a good father”. As the young parents today are too busy to take care of their children, this new form of “Lost on the way” played by nanny Daddy and cute kids triggered（触发）a lot of people’s emotional resonance（共鸣）. Both the kids and their parents will find that their hearts are being drawn closer. But this kind of feeling has just proved that there is a big spiritual barrier between the modern parents and children.
The TV shows like “Children are hard to support!”, “Where are we going, Dad?”, “hot mom” and “cute kids” are becoming more and more popular. All of these show the new parents’ confusion in children’s education and the appeal for the balance between career and family.
In real life, on the one hand the young parents feel helpless because they are too busy to accompany their children under the pressures of work and life; on the other hand they continue to do so. The data collected by HNTV shows that nearly two-thirds of their audience are female, among whom 36% are aged from 25 to 34. We can imagine such a scene that one evening a young mother is watching the show with her young children, while her husband is still at work or trapped in socializing, or maybe is just playing computer games in the bedroom. The story of a child without the company of father is still going on. In fact, it is sometimes the same to mothers. In a modern family, it is often the old who take the responsibility of raising a child. The participation of mother in the children’s education is also very low.
It is just this kind of confusion where the parents have gone in the modern family education, and where the parents will guide their children to go that “Where are we going，Dad?” shows us. If a child wants to grow up healthily and safely into a modern citizen with independent personality and free spirit, it is very important for him or her to follow the parents who serve as their first teacher. Maybe this is the real reason why such kind of TV programs could get hot. The truth is that children will go where their parents go; and society will go where the children go.The program is wildly welcomed mainly because_________.
| A．many famous stars and their children took part in it |
| B．it fully showed us how to be a good father |
| C．it introduced many beautiful sights and cultures |
| D．it triggered a lot of people’s emotional resonance |
In raising a child in modern society, parents should ________.
| A．watch TV shows with their children |
| B．play computer games with their children |
| C．keep their children company to avoid socializing |
| D．balance well between family and career |
Which of the following can be inferred in the passage?
| A．36% of the audience of the program are female aged from 25-34. |
| B．Parents shouldn’t entirely leave the education of children to the old. |
| C．In a modern family it is often mothers who are responsible for raising a child. |
| D．The program shows us the confusion where the parents and children will go to play. |
Which one is the best title of the passage?
| A．Nanny Daddy and Cute Kids |
| B．Modern Education is Important |
| C．Confusion Behind “Where are we going, dad?” |
| D．New Problems in Modern Children’s Education |
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