Motherhood may make women smarter and may help prevent dementia(痴呆) in old age by bathing the brain in protective hormones(荷尔蒙) , U.S. researchers reported on Thursday.
Tests on rats show that those who raise two or more litters of pups do considerably better in tests of memory and skills than rats who have no babies, and their brains show changes that suggest they may be protected against diseases such as Alzheimer’s(早老痴呆症). University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans.
“Our research shows that the hormones of pregnancy(怀孕) are protecting the brain, including estrogen(雌激素), which we know has many neuroprotective (保护神经的) effects,” Kinsley said.
“It’s rat data but humans are mammals just like these animals are mammals,” he added in a telephone interview. “They go through pregnancy and hormonal changes.”
Kinsley said he hoped public health officials and researchers will look to see if having had children protects a woman from Alzheimer’s and other forms of age-related brain decline.
“When people think about pregnancy, they think about what happens to babies and the mother from the neck down,” said Kinsley, who presented his findings to the annual meeting of the Society of Neuroscience in Orlando, Florida.
“They do not realize that hormones are washing on the brain. If you look at female animals who have never gone through pregnancy, they act differently toward young. But if she goes through pregnancy, she will sacrifice her life for her infant—that is a great change in her behavior that showed in genetic alterations (改变) to the brain.”How do scientists know “Motherhood may make women smarter”?
| A．Some researchers have told them. |
| B．Many women say so. |
| C．They know it by experimenting on rats. |
| D．They know it through their own experience. |
What does the phrase “litters of pups” mean in the second paragraph?
| A．Baby rats. | B．Animals. |
| C．Old rats. | D．Grown-up rats. |
What can protect the brain of a woman according to the passage?
| A．Estrogen. | B．The hormones of pregnancy. |
| C．More exercise. | D．Taking care of children. |
Which title is the best for this passage?
| A．Do You Want to Be Smarter? |
| B．Motherhood Makes Women Smarter |
| C．Mysterious Hormones |
| D．An Important Study |
The Colonel（上校） asked Ashenden a good many questions and then suggested that he had particular qualifications for the Secret Service. Ashenden knew several European languages and the fact that he was a writer provided excellent cover: on the pretext（借口） that he was writing a book he could, without attracting attention, visit any neutral country.
It was while they were discussing this point that the Colonel said, "You know you might get material that would be very useful to you in your work. I'll tell you an incident that occurred only recently. Very dramatic. A foreign government minister went down to a Mediterranean resort to recover from a cold and he had some very important documents with him that he kept in a dispatch case（公文箱）. A day or two after he arrived, he picked up a beautiful blonde at some restaurant or other, and he got very friendly with her. He took her back to his hotel, and when he came to himself in the morning, the lady and the dispatch-case had disappeared. They had one or two drinks up in his room and his theory is that when his back was turned the woman slipped a drug in his glass.
"Do you mean to say that happened the other day?" said Ashenden.
"The week before last."
"Impossible," cried Ashenden. "Why! We've been putting that incident on the stage for sixty years, we've written it in a thousand novels. Do you mean to say that life has only just caught up with us?"
"Well, I can guarantee the truth of the story." said the Colonel, "And believe me, the government has been put to no end of trouble by the loss of the documents."
"Well sir, if you can't do better than that in the Secret Service," sighed Ashenden, " I'm afraid that as a source of inspiration to the writer of fiction, it's washout（失败）."How did the Colonel suggest that Ashenden's being a writer would relate to his work as a spy?
| A．It would make traveling abroad more possible. |
| B．It would make it easier for him to meet people. |
| C．It would enable him to avoid arousing suspicion. |
| D．It would enable him to use the languages he knew. |
The reason for the Minister's trip was ________ .
| A．to fetch some documents |
| B．to get over an illness |
| C．to meet a spy |
| D．to deliver some papers |
According to the Colonel the incident happened _______.
| A．a few days before |
| B．a few weeks before |
| C．two weeks before |
| D．sixty years before |
Ashenden cried 'Impossible' after hearing the Colonel's story because he thought ______ .
| A．it was so stupid |
| B．it was too close to fiction |
| C．it was too embarrassing |
| D．it was too recent |
Here are four pieces of news from China Daily:
SHANGHAI---The Huachen Group, which has put 83 million yuan in the development of the commerce market since its official registration late last year, recently held a meeting in Shanghai to show the use of its newly opened tourism business payment network. The network aims to serve tourists from all over the world, but especially from Europe and the United States where credit cards are popularly used. After opening the www.ehinaeonet.com website, netizens can get information about hotels and tourism services on tourism page. Hotels and services can be reserved and payment made through credit cards. The network opened in February in Beijing.
SYDNEY---The Sydney Olympic flame will travel underwater on Australia’s Great Barrier Reef during the torch relay following a successful test.
Scuba diver Wendy Craig, a marine biologist, will carry the torch on three-to-four-minute underwater journey at Agincourt Reef on June 27, creating Olympic history, organizers said yesterday.
Burning at 2,000 degrees, the torch is expected to remain alight three meters underwater because of a special kind of technology which creates a “fierce flame”--- too powerful to be drowned out by water. Charles Tegner, managing director of torch creator, said the flame would burn like a flame from oxygen-producing chemicals.
BEIJING---The election of a new leader in Taiwan cannot change the fact that Taiwan is part of China. “Taiwan Independence” in whatever form will never be allowed, according to a statesman of China’s central government.
“We should listen to what the new leader in Taiwan says and watch what he does. We will observe where he will lead Cross-Straits relations. We are willing to exchange views on Cross-Straits relations and peaceful reunification(统一) with all parties, organizations and people in Taiwan who favor the one-China principle,” says the statesman, from Taiwan Affairs Office of the CPC Central Committee.
HAIKOU---Customs officers in Haikou, capital of South China’s Hainan Province, recently stopped a boat loaded with 781 cases of foreign-brand cigarettes being smuggling into China. The cigarettes are estimated to be worth more than 1.8 million yuan, said a customs officer. They discovered the smuggling boat as they were going around the northern sea area of Yangpu Port.
The smuggled cigarettes cases, packed into two containers, were disguised to avoid being examined. The boat was registered in the coastal city Xiamen in East China’s Fujian Province. All eight suspects aboard the boat were kept by the police in Haikou.Why does the network aim to serve tourists especially from Europe and the USA?
| A．Because they are from developed countries. |
| B．Because the payments of hotels and services are usually made through credit cards in these places. |
| C．Because people in these countries travel much more than those in other countries. |
| D．Because they have more computers than others. |
Which is the best title for the third piece of news?
| A．Ready to Fight | B．No Good End |
| C．Wait and See | D．Peace Comes First |
Which of the following best explains the underlined word “disguised” in the last piece of news?
| A．Made different from the normal so as to hide the truth. |
| B．Designed for a good purpose. |
| C．Hidden out of people’s sight. |
| D．Covered with unattractive things. |
To prevent the deserts coming near, China has planted billions of trees---to replace destroyed forests and as barriers against the sand. This isn’t a cure, though, say experts, as thirsty trees can make the problem worse by taking in groundwater.
“Planting tress is one way, but it isn’t that simple. It doesn’t solve the basic issue of water resources,” says Wu Bo, a professor. “We need to calculate how much water the trees will absorb, or else it could have a negative effect.”
Villagers in Zhengxin have taken on this challenge, with limited success. When the irrigation channels began to run dry, Lu Xianglin switched from wheat to cotton on his land. He also planted trees to protect his fields from sandstorms. He says he still gets good yields（产量） using flood irrigation and earns a good income for his family.
Other farmers haven’t stuck it out（坚持到底）: about one in three have left Zhengxin in the past 10 years after their wheat crops died. Young people who can find jobs in the towns rarely return.
Last week, Mr Lu joined the other men in his village on a government-arranged trip to see the land that has been set aside for their relocation, nearly 40 miles to the south. The next day, he was back, shaking his head at the plan. The idea of uprooting his family troubles him, as does the idea of giving up the land that fed his forefathers. He prefers to stay and keep up the fight.
“With enough water, this problem can be solved,” Lu says. “We can plant trees and grass, and they will grow bigger. That will stop the desert.”
Experts say that farmers could switch to drip irrigation （滴灌）to lessen their water intake for growing crops. Elsewhere in the region, farmers have built brick greenhouses as part of a plan to grow vegetables using less water. Roadside signs urge farmers to “Save Water, Protect the Environment”.The negative effect of planting trees in deserts is that __________.
| A．it can make groundwater become less |
| B．it can prevent the sand moving freely |
| C．it can stop crops growing well |
| D．it can get the soil to become poor |
Why did Mr. Lu NOT accept the idea of relocation?
| A．Because the plan of relocation will cost him much money. |
| B．Because his family had trouble moving away. |
| C．Because he was reluctant to give up his land. |
| D．Because he would rather stay than fight against the deserts. |
What can we infer from the passage?
| A．The deserts drive more and more people to leave their homes for their lives. |
| B．People have no means to fight against the land becoming desert. |
| C．Water is the biggest barrier for people to stop the desert. |
| D．Planting trees cannot solve the problem of desertification of farmland. |
What advice is given by experts to save water?
| A．To plant more trees. |
| B．To build greenhouses. |
| C．To change crops. |
| D．To use drip irrigation. |
C
Maggie was very glad that James was not a frequent visitor to the house. In the children’s opinion, they had something that they couldn’t explain or understand about him and that excited their imagination. He stirred(激起) Maggie’s anger, however, so that she often said to her husband. “It’s mercy that brother of yours doesn’t come oftener.”
In fact James came once a year, unexpectedly, around eight o’clock in the evening, and he stayed for six hours of close discussion with his brother. His arrival was a signal to the children that their bedtime would be delayed. Not that he ever spoke to them or played with them. He took no notice of them, as if he was unable to see children, at least until the time came for him to go. Indeed, after his first greeting and a careless kiss, James took no notice of Maggie either, except to add, “You’ll be getting on with the supper, Maggie”. Such was his regard for her.
Maggie paid him back in her own way. She kept the children up, the four of them, to keep her company, she said, but of course they sang and made a noise and broke the endless sound of James’ voice. Very late, they dropped off to sleep in their chairs. Then, when James was about to go, Maggie woke them up and so more or less forced him to part with four shillings before he left. That gave her some satisfaction, for James, though rich, was unwilling to give or share what he had. He always went home by the last train, just after two o’clock.
Maggie’s children secretly stared at their uncle. They could not forget that he had in their mother’s words, “lost two wives and taken a third”. They wondered about those two unfortunate, lost ladies. They asked each other what their fate(命运) had been, and if neither could ever be found again. James never brought his third wife with him nor ever mentioned her. The children decided that he must be so frightened of losing her that he never allowed her outside the door.Maggie never prepared anything special for James because ________.
| A．he was a man difficult to please |
| B．she never knew when he was coming |
| C．she was too busy looking after her children |
| D．he never stayed long enough for a meal |
What do we know about Jame’s behavior?
| A．He was a kind man, with love for the family. |
| B．He was unselfish, especially towards his brother. |
| C．He was anxious to please the family, especially the children. |
| D．He was rude to his sister-in-law. |
Maggie felt pleased when ________.
| A．she paid James the money that she owed him |
| B．James gave some money to the children |
| C．she had to wake James up to catch his train |
| D．James thanked her for the nice supper |
The children did not realize that two of James’ wives ________.
| A．were dead |
| B．suffered from loss of memory |
| C．had run away from him |
| D．might reappear one day |
Since 1989, Dave Thomas, who died at the age of 69, was one of the most recognizable faces on TV. He appeared in more than 800 commercials for the hamburger chain named for his daughter. “As long as it works”, he said in 1991, “I’ll continue to do those commercials.”
Even though he was successful, Thomas remained troubled by his childhood. “He still won’t let anyone see his feet, which are out of shape because he never had proper fitting shoes,” Wendy said in 1993. Born to a single mother, he was adopted as a baby by Rex and Auleva Thomas of Kalamazoo in Michigan. After Auleva died when he was 5, Thomas spent years on the road as Rex traveled around seeking construction work. “He fed me,” Thomas said, “and if I got out of line, he’d beat me.”
Moving out on his own at 15, Thomas worked, first as a waiter, in many restaurants. But he had something much better in mind. “I thought if I owned a restaurant,” he said, “I could eat for free.” A 1956 meeting with Harland Sanders led Thomas to a career as the manager of a Kentucky Chicken restaurant that made him a millionaire in 1968.
In 1969, after breaking with Sanders, Thomas started the first Wendy’s Old Fashioned Hamburgers, in Columbus, Ohio, which set itself apart by serving made-to-order burgers. With 6,000 restaurants worldwide, the chain now makes $ 6 billion a year in sales. Although troubled by his own experience with adoption, Thomas, married since 1954 to Lorraine, 66, and with four grown kids besides Wendy, felt it could offer a future for other children. He started the Dave Thomas Foundation for Adoption in 1992.
In 1993, Thomas, who had left school at 15, graduated from Coconut Creek High School in Florida. He even took Lorraine to the graduation dance party. The kids voted him Most Likely to Succeed.
“The Dave you saw on TV was the real Dave,” says friend Pat Williams. “He wasn’t a great actor or a great speaker .He was just Joe Everybody.”What is the article mainly about?
| A．The life of Dave Thomas. |
| B．The dream of Dave Thomas. |
| C．The schooling of Dave Thomas. |
| D．The growth of Dave Thomas’s business. |
What do we know about his childhood?
| A．He lived a poor life. |
| B．He had caring parents. |
| C．He stayed in one place. |
| D．He didn’t go to school. |
Choose the right time order of the following events in Thomas’s life.
a. graduated from high school
b. started his own business
c. became a millionaire
d. started a foundation
e. met Harland Sanders
| A．e, b, c, d, a | B．a, e, c, b, d |
| C．e, c, b, d, a | D．a, e, b, c, d |
“He was just Joe Everybody” (in the last paragraph) means_________.
| A．Dave was famous |
| B．Dave was shy |
| C．Dave was showy |
| D．Dave was ordinary |