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. reseachers 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. |
“It’s rat data but humans are mammals just like these animals are mammals.” What does the sentence suggest?
| A．The experiments on the rats have nothing to do with humans. |
| B．The experiments on the rats are very important for animals. |
| C．The experiments on the rats are much the same on humans. |
| D．The experiments on the rats are much the same on other animals. |
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 |
I wondered if anyone had experienced such an unexpected trip as I had.
The day of my holiday arrived, but I wasn’t looking forward to it. I had little money and had only been able to afford to stay with my Aunt Rosa in Spain. So, I wasn’t really excited as I knew exactly what it was going to be like: lots of noisy cousins, and Aunt Rosa begging me to take her for a ride.
After I had checked in, I made my way slowly to the departure gate. As I was waiting to board the plane, I kept thinking about my ideal holiday destination: Jamaica, with its long, sandy beaches and crystal clear water.
As soon as the plane took off, I fell fast asleep and only woke to the sound of the announcement: “Ladies and gentlemen, please fasten your seat belts, as we will shortly be landing in Kingston.” I froze in my seat. Was I dreaming? Kingston? Jamaica? I had boarded the wrong plane!
Immediately after the plane landed, I explained the situation to the authorities. It seems there were also three other passengers heading for Spain. Apparently it had been the airline’s fault, since the flight numbers for Spain and Jamaica were exactly the same! Therefore, with no flight back to London for a week, the airline had no choice but to pay for our stay.
So there I was, lying on the beach, enjoying the music and the marvelous food of Jamaica! As for Aunt Rosa, I suppose she just had to live without me!Why did the writer choose to spend her holiday with her aunt in Spain?
| A．She missed her cousins very much. |
| B．She could hardly afford any better trip. |
| C．Her aunt begged her to go there. |
| D．Spain was her ideal destination. |
In the text, the writer ended up _________.
| A．flying to London immediately |
| B．heading for Spain from Jamaica |
| C．enjoying a free beach holiday |
| D．complaining to the authorities |
Which of the following might be the best title of the text?
| A．A Well-Planned Trip | B．A Terrible Adventure |
| C．A Nice Dream | D．A Lucky Mistake |
I call my story the story of a bad boy, partly to distinguish myself from those faultless young gentlemen, and partly because I really was not an angle. I may truthfully say I was a friendly, impulsive(易冲动的)teenager. I didn’t want to be an angel. In short, I was a real human boy, such as you may meet anywhere in New England.
Whenever a new scholar came to our school, I used to ask him “ My name’s Tom Bailey; what’s your name?” If the name struck me favorably, I shook hands with the new pupil cordially, but if it didn’t, I would turn and walk away, for I was particular on this point.
I was born in Rivermouth almost fifty years ago, but, before I became very well acquainted with that pretty New England town, my parents moved to New Orleans. I was only eighteen months old at the time of the move, and it didn’t make much difference to me where I was, because several years later, when my father proposed to take me North to be educated, I had my own view on the subject. I instantly kicked over the little boy, Sam, who happened to be standing by me at the moment, and declared that I would not be taken away to live among a lot of Yankees! You see I was what is called “ a Northern man with Southern principles,” I had no recollection of New England: my earliest memories were connected with the South. I knew I was born in the North, but hoped nobody would find it out. I never told my schoolmates I was a Yankee, because they talked about Yankees in a scornful way which made me feel that it was quite a shame not to be born in the South.
And this impression was strengthened by Aunt Chloe, who said, “There wasn’t no gentlemen in the North no way.”
With this picture of Northern civilization in my eye, the readers will easily understand my terror at the bare thought of being transported to Rivermouth to school, and possibly will forgive me for kicking over little Sam, when my father announced this to me. As for kicking little Sam, I always did that, more or less gently, when anything went wrong with me.
My father was greatly troubled by this violent behavior. As little Sam picked himself up, my father took my hand in his and led me thoughtfully to the library. He appeared strangely puzzled on learning the nature of my objections to going North.
“Who on earth, Tom, has filled your brain with those silly stories?” asked my father calmly.
“Aunt Chloe, sir, she told me.”
My father devoted that evening and several evenings to giving me a clear account of New England: its early struggles, its progress, and its present condition. I was no longer unwilling to go North; on the contrary, the proposed journey to a new world full of wonders kept me awake nights. Long before the moving day arrived I was eager to be off. My impatience was increased by the fact that my father had purchased for me a fine little Mustang pony, and shipped it to Rivermouth two weeks before the date set for our own journey. The pony completely resigned me to the situation. The pony’s name was Gitana, which is the Spanish for “gypsy”, so I always called her Gypsy.
Finally the time came to leave the vine-covered mansion among the orange-trees, to say goodbye to little Sam(I am convince he was heartily glad to get rid of me), and to part with Aunt Chloe. I imagine them standing by the open garden gate; the tears are rolling down Aunt Chloe’s cheeks; they and the old home fade away. I am never to see them again!The underlined word “cordially” in Paragraph 2 most probably means “________”.
| A．sincerely | B．unbelievably |
| C．officially | D．closely |
The second paragraph is intended to _______.
| A．support Tom’s opinion that he is a “faultless young gentlemen” |
| B．show just how much confidence Tom possesses |
| C．contradict other people’s belief that Tom is not a well-behaved, friendly boy |
| D．provide an example that Tom is friendly and not an angel |
Tom Bailey’s feeling on moving to Rivermouth can best be described as _______.
| A．cold, as he was too young to know any better |
| B．unwilling until his father corrected his misunderstandings about life in the North |
| C．angry because he would be forced to leave his pony, Gypsy, behind |
| D．excited until he realized that he would have to part with Aunt Chloe and little Sam |
It can be inferred from “a Northern man with Southern principles” that ______.
| A．Tom is a Yankee, unwilling adapting to a Southern lifestyle |
| B．even though Tom now lives in the South, he is proud of his Northern heritage |
| C．Tom has successfully subscribed to some Northern values and some Southern values |
| D．although Tom was born in New England he liked the way of life and culture in the South |
Sleep deprivation(缺失)is an important hidden factor in lowering the achievement of school pupils, according to researchers carrying out international education tests.
It is a particular problem in richer countries with sleep experts linking it to the use of mobile phones and computers in bedroom late at night. Sleep deprivation is such a serious problem that lessons have to be dragged down to a lower level to suit sleep-deprived learners, the study found. The international comparison, carried out by Boston College, found the United States to have the highest number of sleep-deprived students, with 73% of 9- and 10-year-olds and 80% of 13- and 14-year-olds identified by their teachers as being negatively affected.
In literacy(读写能力) tests there were 76% of 9- and 10-year-olds lacking sleep. This was much higher than the international average of 47% of primary pupils needing more sleep and 57% among the secondary age group.
Other countries with the most sleep-deprived youngsters were New Zealand, Saudi Arabia, Australia, England, Ireland and France. High-performing Finland is also among the most lacking in sleep. Countries with the best records for getting enough sleep include Azerbaijan, Kazakhstan, Portugal, the Czech Republic, Japan and Malta.
The analysis was part of the huge date-gathering process for global education rankings, the Trends in International Mathematics and Science Study(TIMSS)and Progress in International Reading Literacy Study(PIRLS)
“I think we underestimate the impact of sleep. Our data show that across countries internationally, on average, children who have more sleep achieve higher in maths, science and reading. That is exactly what our data show,” says Chad Minnich of the TIMSS and PIRLS International Study Center.
“It’s the same link for children who are lacking basic nutrition,” says Mr Minnich, based at the Lynch School of Education, Boston College. “If you are unable to concentrate, to attend mentally, you are unable to achieve at your best level, because your mind and body are in need of something more basic. Sleep is a fundamental need for all children. If teachers report such large proportions of children suffering from lack of sleep, it’s having a significant impact. But worse than that, teachers are having to adjust their instruction based on those children who are suffering from a lack of sleep. The children who are suffering from a lack of sleep are driving down instruction.”
That means that even the children who are getting enough sleep are still suffering from this sleep-related lowering. What did the researchers of Boston College try to find?
| A．Why children don’t get enough sleep |
| B．How many hours children sleep every night |
| C．The relationship between sleep and test results |
| D．The relationship between sleep and health |
Many children suffer from sleep deprivation because _________.
| A．they sit in front of the TV for too long |
| B．they can hardly sleep soundly and deeply |
| C．their homework occupies too much of their time |
| D．modern technological devices consume a lot of their time |
Which of the following countries has the most sleep-deprived students?
| A．Japan | B．Malta |
| C．Finland | D．Portugal |
Why are children who get enough sleep also victims?
| A．Because they are disturbed by sleep-deprived students |
| B．Because teaching is driven down by sleep-deprived students |
| C．Because they have to spend time helping sleep-deprived students |
| D．Because the teachers waste time disciplining sleep-deprived students |
The Catskill Mountains are a year-round playground for outdoor enthusiasts and nature lovers. You will find a number of relaxing inns ready to meet your needs.
Caleb Street’s Inn
Located in the historic village of Catskill at the base of the mountains, Caleb Street’s Inn was built in 1785. It provides a view of the garden and Catskill Creek or guests can step outside for a walk along the Hudson River. A full breakfast is served every morning. Each of the four Pet-friendly rooms offers a private bath and a view of the river and neighboring buildings. Hiking trails(小路), golf courses and historic sites are only a short drive away.
Winter Clove Inn
Nature lovers can enjoy a pleasant location in the Northern Catskill Wilderness Preserve at Winter Clove Inn. With wood floors, each room has a private bath and air conditioning(空调). With active days of tennis, hiking or cross- country skiing ahead, guests don’t have to go far for a breakfast, lunch or dinner beside the fireplace at inn’s restaurant.
Windham House
A former pub built in 1805, Christman’s Windham House is the oldest inn continually operating in the Catskills. The 300 acres of grounds in the town of Windham include a tennis court, golf course, heated pool and a restaurant. Guests can relax on private balconies (阳台) overlooking a golf course and take their meals at Christman’s Windham House Restaurant. The inn is less than 2 miles from the hiking trails of Windham Mountain.
Washington Irving In
If you’re looking for a mountain inn with a Victorian feel, Washington Irving Inn has much to offer. Furnished with antiques, each of the 15 rooms has a private bath. Free breakfast is served. Hikers are a short walk from Kaaterskill Falls and Hunter Mountain trails. What is special about Caleb Street’s Inn?
| A．It has a golf course for guest |
| B．It provides a beautiful view of Kaaterskill Falls |
| C．It’s decorated with wood floors |
| D．It allows guests to take their dog or cat with them |
All the four inns in the passage ______
| A．have private bathrooms |
| B．has air conditioning in the rooms |
| C．are convenient for hiking |
| D．serve free breakfast in the morning |
Australia’s koalas could be dying out within 30 years, unless urgent measures is taken to stop the losing in population, according to researchers. They say development, climate change and bushfires have all related to reduce the number of wild koalas sharply. The Australian Koala Foundation said a recent survey showed the population could have dropped by more than half in the past six years. Previous estimates put the number of koalas at more than 100,000, but the latest figures suggest there could now be as few as 43,000.
The foundation collected field data from 1,800 sites and 80,000 trees to calculate the numbers. In one area in northern Queensland estimated to have 20,000 koalas a decade ago, a team of eight people could not find a single animal in four days of searching.
The foundation said besides problems caused by cutting down forests, hotter and drier conditions because of global warming had reduced the nutritional(营养的)value of their staple food, eucalyptus leaves, leading to poor nutrition for them.
Koalas, which live in the forests in Australia’s east and south, are very particular about what types of the leaves they eat.
Foundation chief Deborah Tabart said: “The koalas are missing everywhere we look. It’s really no tree, no me. If you keep cutting down trees you don’t have any koalas.”She is hoping the new figures will persuade the government’s Threatened Species Steering Committee (TSSC) to list the koala as threatened. But committee chairman Bob Beeton said a decision was not likely recently and the koala’s status as one of the country’s favorite animals would not be a factor. “There’s a number of species which are attractive and people have special feelings towards them. We don’t consider that,” Mr. Beeton was reported as saying by the AFP agency.The writer gives the example of the area in northern Queensland in Paragraph 3 to show that _____.
| A．the environment is being polluted seriously |
| B．the number of koalas is dropping quickly |
| C．the forests are being damaged heavily |
| D．koalas usually live in wild mountainous areas |
Global warming is an important cause of koalas’ reduction because _____.
| A．the leaves koalas eat are losing nutritional value |
| B．koalas cannot get enough water to drink |
| C．koalas can hardly stand the hot weather |
| D．the leaves koalas eat cannot grow in hot weather |
According to Bob Beeton, _____.
| A．they needn’t pay special attention to koalas |
| B．a decision will be made to protect koalas |
| C．koalas are his favorite animals |
| D．koalas needn’t be protected at all |