题目
题型：不详难度：来源：
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 (***) 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.”
小题1: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. |
| A．Baby rats. | B．Animals. | C．Old rats. | D．Grown-up rats. |
| A．Estrogen. | B．The hormones of pregnancy. |
| C．More exercise. | D．Taking care of children. |
| 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. |
答案
小题1:C
小题2:A
小题3:B
小题4:C
解析
试题分析：本文介绍了科学家通过做实验得出这个结论：母性特点能使妇女变得更加聪明灵敏。主要因为***期间产生的荷尔蒙洗涤了大脑。
小题1:细节题。根据Tests on rats show…可知科学家是通过做老鼠实验得出这个结论的。选C。
小题2:词义猜测题。后面的对比who have no babies，实际上提供了一个相反的情况，所以我们可以推测those who raise two or more litters of pups中的litters of pups指的是“刚出生不久的小老鼠”。选A。
小题3:细节题。根据文章第 3 段中的…the hormones of pregnancy(***) are protecting the brain可得出答案选B。
小题4:句意理解题。科学家通过用老鼠做实验来说明人的问题。因为人和老鼠都属于哺乳动物，很多生理机能都相同。选C。
点评：科普类短文会有一些专业术语，但并不影响做题，在解答这类问题时要求学生抓住题干文字信息，采用针对性方法进行阅读，答案在文章中可以直接找到。
核心考点
试题【Motherhood may make women smarter and may help prevent dementia(痴呆) in old age b】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
What does a computer virus do? It targets electronic objects that are programmed. The virus spreads through connections between these electronic objects. For virus spreading experts, e-mail is a favorite method of sending their destructive (破坏性的) weapon.
But scientists warn that this is not the worst that can happen. There is more. People are also connected through phones. The next virus may actually target mobile phones, especially those that are programmed to do many tasks apart from just communicating. It would then be easy for a virus to infect those programs and create major disorder.
For example, these virus may have the power to record your phone conversations and make others hear them. They create problems with your electronic money accounts, or they could create a mountain of telephone bills for calls you never made. And that would be a disaster. A report on this was published in the New Scientist recently.
One way out would be to have simpler phones with not so many different functions. This would mean there would mean there would be fewer programs for the virus to attack. But mobile phone producers are in a fix. People on longer want an electronic item to perform just one task. They want more and more functions added. That would mean more software programs to make the mobile phone perform all those functions. And that means the possibility of more viruses.
小题1:It can be inferred from the passage that ______.
| A．computer viruses are not so as destructive as mobile phone viruses |
| B．people should be careful when receiving e-mails |
| C．people find it difficult to use electronic equipment correctly |
| D．having electronic money accounts brings people a lot of convenience |
| A．You can’t hear the person who answers the phone clearly |
| B．You can’t send e-mails with your mobile phone |
| C．your phone bill increases for unknown reasons |
| D．You can hear other people’s phone conversations |
| A．Mobile phone producers have made no progress. |
| B．Mobile phone producers are proud of their products. |
| C．Mobile phone producers are faced with a difficult situation. |
| D．Mobile phone producers refused to fight against virus. |
| A．Government officials | B．Virus spreading experts |
| C．Electronic scientists | D．Mobile phone users |
When planes fall from the sky, as a Yemeni airliner did on its way to Comoros Islands in the India ocean June 30, 2009, the black box is the best bet for identifying what went wrong. So when a French submarine (潜水艇) detected the device"s homing signal five days later, the discovery marked a huge step toward determining the cause of a tragedy in which 152 passengers were killed.
In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction. That was the first mode for a black box, which became a requirement on all U.S. commercial flights by 1960. Early models often failed to withstand crashes, however, so in 1965 the device was completely redesigned and moved to the rear of the plane – the area least subject to（易遭受）impact – from its original position in the landing wells (起落架舱). The same year, the Federal Aviation Authority required that the boxes, which were never actually black, be painted orange or yellow to aid visibility.
Modern airplanes have two black boxes: a voice recorder, which tracks pilots" conversations, and a flight-data recorder, which monitors fuel levels, engine noises and other operating functions that help investigators reconstruct the aircraft"s final moments. Placed in an insulated (隔绝的) case and surrounded by a quarter-inch-thick panels of stainless steel, the boxes can withstand massive force and temperatures up to 2,000℉. When submerged, they"re also able to emit signals from depths of 20,000 ft.
Experts believe the boxes from Air France Flight 447, which crashed near Brazil on June 1, 2009, are in water nearly that deep, but statistics say they"re still likely to turn up. In the approximately 20 deep-sea crashes over the past 30 years, only one plane"s black boxes were never recovered.
小题1:What information could be found from the black box on the Yemeni airliner?
| A．Data for analyzing the cause of the crash. |
| B．The total number of passengers on board. |
| C．The scene of the crash and extent of the damage. |
| D．Homing signals sent by the pilot before the crash. |
| A．New materials became available by that time. |
| B．Too much space was needed for its installation. |
| C．The early models often got damaged in the crash. |
| D．The early models didn"t provide the needed data. |
| A．To distinguish them from the colour of the plane. |
| B．To caution people to handle them with care. |
| C．To make them easily identifiable. |
| D．To obey international standards |
| A．There is still a good chance of their being recovered. |
| B．There is an urgent need for them to be reconstructed. |
| C．They have stopped sending homing signals. |
| D．They were destroyed somewhere near Brazil. |
The breakthrough study conducted by psychologist Professor Ben Bradley, at Charles Sturt University, could completely transform the way child-care centers are set up. In their study, the researchers examined groups of nine-month-old babies in new South Wales and Britain.
And they came across astonishing results—it was found that infants had “social brains” and focused not just on their mothers but on social 1ife in groups as well,
“They communicate with more than one baby at once，and show jealousy and generousness，”said Professor Bradley．
He added，“They develop their own meanings through group interaction，they notice if a group member is behaving differently and they take on roles，such as leaders and followers．”
“A baby who has a depressed mother tends to be withdrawn(内向的)，but put that same baby in a group of its peers(同龄人)and they behave and interact like any other baby．”
It was the first all-baby group study ever to be conducted．“Most studies of babies concentrate on the infant-mother relationship，assuming that is the single foundation for mental health．but babies are constantly involved with groups of people other than their mothers：fathers，siblings，grandparents and those taking care．Therefore。the ‘mother-baby approach’ needs to be combined with a‘ group approach’．”said Bradley．
Phoebe Christison ，a child-care worker at Camperdown Sunshine Bubs in Sydney’s inner west．said she often noticed what appeared．to be emotional attachments developed between toddlers．
She said，“Joel(10 months)and Isabella (11months)always like to hold hands when they sit in their high chairs and eat．And babies definitely show jealousy．They push and touch each other，and copy what the other is doing．”
小题1:A baby who has a depressed mother ____ ．
| A．tends to be a follower |
| B．also enjoys group interaction |
| C．has poor social ability |
| D．pays more attention to its mother |
| A．Babies are affected by groups more than by their mothers． |
| B．There’s no need of child-care centers at a11． |
| C． Adults should include babies when having social activities． |
| D．The normal infant-mother bond alone isn’t enough for the good mental health for babies． |
| A．adults | B．infants | C．peers | D．groups |
| A．is born to be friendly to other babies |
| B．has interest in peers as well as in its mother |
| C．may have emotional attachments to another baby |
| D．shows jealousy and generousness as an adult |
Nowadays, children watch television for long hours. They often spend evenings watching their favorite programs on TV. Sometimes they might stay up late to watch TV. Their addiction to television results in their not having time to play or do exercise. They should go outside with friends or spend time reading books. Moreover, watching television too much is harmful to their eyesight.
Researchers claim that attention deficit disorders in children are a result of watching too much television. They say that watching television leads to a developmental disorder in the part of the brain which is responsible for language skills. Children who watch television more and read less have greater difficulty paying attention and concentrating. Children that spend long hours watching television are more likely to be affected by attention deficit disorders.
Television is one form of media which is used to show all kinds of products. Watching too much television can lead to early exposure to a wide variety of things. Television advertisements may cause children to behave incorrectly or damage themselves. Advertisements about fast food, cold drinks or other such products that are not good for children’s health can have a bad effect on them. Some TV shows and films also affect how children think and behave.
Studies in psychology have shown that certain programs can have a long-lasting effect on children’s minds. Horror scenes and other frightening shows can have a negative effect on the minds of children watching them.
Television is a means of recreation but watching it too often is harmful to children’s physical and mental health. You need to help you children deep a balance of everything in life.
小题1:The underlined word “deficit ” in the third paragraph most probably means _____.
| A．need | B．habit | C．fear | D．lack |
| A．decide on when children can watch television |
| B．give children more time to play |
| C．help you children balance everyday life |
| D．stop you children from watching TV |
| A．The bad effects watching TV has on children. |
| B．How many hours children should spend watching TV. |
| C．How advertisements affect children’s behavior. |
| D．What scenes children should not watch on TV. |
a. causing children to have less time to read good books.
b. making children behave improperly
c. harming children’s eyesight
d. affecting the parent-child relationship
| A．a, b, d | B．b, c, d | C．a, b, c | D．a, c, d |
Too many people wander through life like sleepwalkers. Each day they follow familiar routines, never asking, ＂What am I doing with my life?＂and they don＇t know what they＇re doing because they lack goals.
Goal-setting is a focus of the will to move in a certain direction. Begin with a clear conception of what you want. Write down your goals and date them---putting them into words clarifies them. Rather than concentrating on objects to acquire and possess, focus on fulfilling your desires to do, to produce, to contribute to goal-setting that yields the true sense of satisfaction we all need.
It’s important to visualize(想象)yourself accomplishing your goal. While losers visualize the penalties(不利) of failure, winners visualize the rewards of success. I’ve seen it among athletes, statistics contrasting air and highway safety, but it made no difference. I had read too many articles describing crash scenes and imagined these scenes vividly. I had programmed myself, without realizing it ,to stay off planes.
Then one summer I had the opportunity to fly on a private plane with friends to a resort; I didn’t want to miss out on a great vacation. So I spent two weeks imagining a smooth flight on a beautiful sunny day and an easy landing.
When the day arrived, I was eager to go . To everyone＇s surprise, I got on the plane and I loved every minute of it , and I still use the techniques I employed that day.
小题1:According to the passage, if you want to be successful ,the first thing for you to do is to .
| A．find the right methods | B．be careful about everything |
| C．know your ability | D．have a clear goal |
| A．he didn’t know air travel is safer than highway travel |
| B．he couldn’t imagine himself accomplishing his goal |
| C．he read too much about plane crashes and tried to avoid flying |
| D．he wanted to take a private plane instead of a public one |
| A．Defining Your Goal | B．Visualizing Reward of Success |
| C．Overcoming the Fear of Air Travel | D．Sleepwalking Through life |
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