.
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 changes to the brain.”
51. How do scientists know “Motherhood may make women smarter”?
A. They know it by experimenting on rats. B. Many women say so.
C. Some researchers have told them. D. They know it through their own experience.
52. What does the phrase “litters of pups” mean in the second paragraph?
A. Old rats. B. Animals. C. Baby rats. D. Grown-up rats.
53. What can protect the brain of a woman according to the passage?
A. Estrogen. B. Taking care of children.
C. More exercise. D. The hormones of pregnancy.
54. “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 are much the same on humans.
B. The experiments on the rats are very important for animals.
C. The experiments on the rats have nothing to do with humans.
D. The experiments on the rats are much the same on other animals.
55. Which title is the best for this passage?
A. Do You Want to Be Smarter? B. An Important Study
C. Mysterious Hormones D. Motherhood Makes Women Smarter
Have you ever had the strange feeling that you were being watched? You turned around and, sure enough, someone was looking right at you!
Parapsychologists(灵学家) say that humans have a natural ability to sense when someone is looking at them. To research whether such a “sixth sense” really exists, Robert Baker, a psychologist(心理学家) at the University of Kentucky, performed two experiments.
In the first one, Baker sat behind unknowing people in public places and stared at the backs of their heads for 5 to 15 minutes. The subjects（受试者）were eating, drinking, reading, studying, watching TV, or working at a computer. Baker made sure that the people could not tell that he was sitting behind them during those periods. Later, when he questioned the subjects, almost all of them said they had no sense that someone was staring at them.
For the second experiment, Baker told the subjects that they would be stared at from time to time from behind a two-way mirror in a laboratory setting. The people had to write down when they felt they were being stared at and when they weren’t. Baker found that the subjects were no better at telling when they were stared at and when they weren’t. Baker found that the subjects were no better at telling when they were started at than if they had just guessed.
Baker concludes that people do not have the ability to sense when they’re being stared at. If people doubt the outcome of his two experiments, said Baker, “I suggest they repeat the experiments and see for themselves.”The purpose of the two experiments is to _______.
| A．explain when people can have a sixth sense |
| B．show how people act while being watched in the lab |
| C．study whether humans can sense when they are stared at |
| D．prove why humans have a sixth sense |
In the first experiment, the subjects _______.
| A．were not told that they would be stared at | B．lost their sense when they were stared at |
C．were not sure when they woul d be stared at |
D．were uncomfortable when they were stared at |
The underlined word “outcome” in the last paragraph most probably means ______.
| A．value | B．result | C．performance | D．connection |
What can be learned from the passage?
| A．People are born with a sixth sense. |
| B．The experiments support parapsychologists’ idea. |
| C．The subjects do not have a sixth sense in the experiments. |
| D．People have a sixth sense in public places. |
Some years ago, a Miami woman walking through an office building noticed two men standing together. Several minutes after her leaving, the men murdered a person working in the building. The police determined that the woman was the only 
witness and could possibly describe them. However, her memory of the men proved disappointingly unclear. Several days later, psychologist Ronald Fisher was brought in to obtain a more complete account from the woman. His interview produced a breakthrough—the woman reported a clear picture of one of the suspects. The important information enabled the police to arrest the suspect and close the case.
The police asked Fisher for help because of his rich knowledge in cognitive interview, a kind of memory-rebuilding process. Memory researchers have found that people trying to remember a past event often only recall(回忆) part of the relevant information. Human memory is selective and it is often distorted by stress. But a person’s accurate recall of an event or understanding of a question can be improved using specific interviewing techniques. The “cognitive interview” was developed in the late 1990s. It encourages the 
witness to take an active role in recalling information rather than giving answers only to some
one else’s questions. The witness first describes what happened in his or her own words, with no interviewer interruptions. 
The interviewer then goes further with specific techniques, such as having the witness tell the details of what happened from different perspectives (角度).
The cognitive interview focuses on guiding witnesses through four general recalling techniques: thinking about physical surroundings and personal feelings that existed at the time of past events; reporting everything that comes to mind about those events, no matter how broken it is; retelling events in a variety of time orders, such as from beginning to end, end to beginning, forward or backward; and adopting different perspectives while recalling events.
Experiments with police detectives trained in this demanding interview method find that they obtain nearly 50% more information from witnesses than before training, while error rates remain about the same. It is proved that cognitive interviews are quite important tools in improving the accuracy and completeness of witness testimony (证词). The purpose of the passage is to ______.
| A．give an account of a murder case |
| B．introduce an idea of cognitive interview |
| C．prove Fisher was an expert in cognitive interview |
| D．help a witness to recall information in a cognitive interview |
What is required to recall in a cognitive interview for a witness?
| A．The exact time at which a murder took place. |
| B．The information about the event in the time order. |
| C．The important things that come to his or her mind. |
| D．The surroundings and feelings at the time of the event. |
The key point in a cognitive interview is that ______.
| A．the witness is encouraged to take part in recalling information |
| B．the interviewer should interrupt the witness from time to time |
| C．the interview should take place outside the police station |
| D．the witness should recall details at the scene of the event |
Bestsellers for last week
A Special Relationship
This novel is about a woman whose entire life is turned upside down in a very foreign place despite the fact that people there speak her language. Sally Good child is a 37-year-old American who, after nearly two decades as a highly independent journalist, finds herself pregnant and in London. She married an English foreign correspondent, Tony Thompson, whom she met while they were both on assignment in Cairo. From the beginning, Sally’s relationship with both Tony and London is an uneasy one: She finds her husband and his city to be far more foreign than imagined. But her adjustment problems soon turn into a nightmare(噩梦). She discovers that everything can be taken down and used against you, especially by a spouse (配偶) who now considers you an unfit mother and wants to prevent you from ever seeing your child again.
Born in 1955, Douglas Kennedy is the bestselling author of romances such as “The Big Picture”. He is also the author of several praised travel books.
White Hot
Sayre Lynch decided never to return to her hometown Destiny, after she changed her last name and finally escaped from the influence of her controlling father, Huff Hoyle, who owns the iron foundry that the town is built around.
But when Danny, her younger brother, is found dead with a shotgun in his mouth, Sayre unwillingly goes back for his funeral and is annoyed when her father’s handsome lawyer, Beck Merchant, tries to please her.
When the young officer investigating(调查) the case notes that some of the evidence points to murder rather than suicide(自杀), Sayre finds herself unable to leave Destiny. She’s annoyed by Beck’s constant presence, and she is not sure if 
he’s trying to help or throw her off the trail. Nor does she trust her father or her older brother, Chris, who is as prime suspect in Danny’s murder.
As she tries to figure out how the handsome, charming Beck fits into the picture, she finds herself deeply attracted to him.]
Sandra Brown is the author of 51 New York Times top-five bestsellers. She began her writing career in 1981 and has since published 65 novels.From the brief introduction of “A Special Relationship” we can imagine _____.
| A．Sally and Tony’s marriage is pleasant. | B．Sally and Tony may break up. |
| C．Sally and Tony often quarrel about their jobs. | D．Sally is hard to get on with. |
The story of Sally and Tony mainly happens in _____.
| A．America | B．London | C．Cairo | D．Cairo & London |
It can be learned from the passage that______.
| A．Chris killed Danny. | B．Lynch is Sayre’s real family name. |
| C．Huff Hoyle knows who killed Danny. | D．Sayre fell in love with Beck. |
In the introduction of White Hot, the underlined phrase suggests_____.
| A．Sayre thinks Beck has something to do with Danny’s death. |
| B．Sayre thinks Beck is the right person she wants to marry. |
| C．Sayre likes the handsome Beck in the picture. |
| D．Sayre doesn’t know whether Beck likes her. |
The Worst Part
Mom is usually home on Sunday but this week she was going to a big golf game and 
I was all alone in the house. I was mad at Mom for divorcing Dad.
I kept looking at the telephone until I couldn’t stand it any longer. I picked up the receiver and dialed Dad’s number over in Bakersfield. I even remembered to dial I first because it was long distance. “You promised to phone me this week but you didn’t,” I said, feeling I had to talk to him.
“Take it easy, kid,” he said. “I just didn’t get around to it. I was going to call this evening. The week isn’t over yet.”
I thought about that.
“Something on your mind?” he asked.
“I hoped you would call, so I waited and waited.” Then I was sorry I said it.
“There was heavy snow in the morning,” he said, “I had to chain up on highway 80 and lost time.”
I know putting chains on eight big wheels i
n the snow is no fun. I felt a little better, as long as we were talking. “How is Bandit?” I asked.
There was a funny silence. For a minute I thought the line was dead. Then I knew something must have happened to my dog.
“Well, kid—”, he began. “My name is Leigh!” I almost yelled. “I’m not just some kid you met on the street!”
“Keep your shirt on, Leigh,” he said. “When I had to stop along with some other truckers to put on chains, I left Bandit out of the cab, I thought he would get back … I have sent out a call to CB radio, but I didn’t get an answer yet.” I was about to say I understood when there came the bad part, the really bad part. I heard a boy’s voice say, “Hey, Bill, Mom wants to know when we’re going out to get the pizza?”From the story we know that _______.
| A．Leigh’s dad never had a rest on Sundays | B．Leigh was a deserted boy |
| C．Leigh’s dad lived in another city | D．Leigh’s mother often went to golf games |
What happened to Bandit?
| A．It was frozen to death. | B．It was let out of the cab and got lost |
| C．It was killed by a truck. | D．It ran off Highway 80 and into the mountain. |
The underlined sentence “Keep your shirt on” probably means “_______”.
A. Listen to reason B. Stop talking C
. Calm down D. Keep warmIn Leigh’s eye, “the worst part” may be that ________.
| A．his dad got remarried | B．his parents got divorced |
| C．his dad didn’t love him | D．his mom didn’t take him to pizza |
Why do men die earlier than women? The latest research makes it known that the reason could be that men's hearts go into rapid decline when they reach middle age.
The largest study of the effects of ageing on the heart has found that women's longevity may be linked to the fact that their hearts do not lose their pumping power with age.
“We have found that the power of the male heart falls by 20--25 percent between 18 and 70 years of age,” said the head of the study, David Goldspink of Liverpool John Moores University in the UK.
"Within the heart there are millions of cells that enable it to beat. Between the age of 20 and 70，one-third of those cells die and are not replaced in men,” said Goldspink. "This is part of the ageing process."
What surprises scientists is that the female heart sees very little loss of these cells. A healthy 70-year-old woman's heart could perform almost as well as a 20-year-old one's.
"This gender difference might just explain why women live longer than men,” said Goldspink.
They studied more than 250 healthy men and women between the ages of 18 and 80，focusing on healthy persons to remove the confusing influence of disease.
The team has yet to find why ageing takes a greater loss on the male heart, said Goldspink.
The good news is that men can improve the health of their heart with regular exercise. Goldspink stressed that women also need regular exercise to prevent their leg muscles becoming smaller and weaker as they age. The underlined word “longevity" in the second paragraph probably refers to ______.
| A．health | B．long life | C．ageing | D．effect |
The text mainly talks about ______.
| A．men's heart cells | B．women's ageing process、 |
| C．the gender difference | D．hearts and long life |
If you want to live longer, you should
| A．enable your heart to beat much faster |
| B．find out the reason for ageing |
| C．exercise regularly to keep your heart healthy |
| D．prevent your cells from being lost |
We can know from the passage that
| A．the reason why ageing takes a greater loss on the male heart has been found out |
| B．scientists are on the way to finding out why the male heart loses more of the cells |
| C．the team has done something to prevent the male from suffering the greater loss |
| D．women over 70 could lose more heart cells than those at the age of 20 |
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