Researchers have found that people's mental abilities hit the highest point at 22 before beginning to get worse just five years later.
Professor Timothy Salthouse said the results told us that treatment which was planned to prevent or make overage-connected conditions better may need to start earlier, long before people become retired (退休).
"Almost half of those over 50 is not clear about the main cause of the fall of mental abilities. Results show that the age-connected cognitive decline (认知衰退) begin in healthy, educated adults when they are in their 20s and 30s, " he said. Tests like those are often used to show mental disabilities and the falling, including dementia (痴呆症).
The research by the University of Virginia found that in nine out of 12 tests the common age at which the top performance appeared was 22.
The first age at which performance was much lower than the highest scores was 27—for three tests about reasoning, speed of thought and space imagination.
Memory was shown to fall from the average age of 37. In the other tests, poorer results were shown by the age of 42.
However, the report published in the magazine "Neurobiology Of Ageing", found that abilities that are based on collected knowledge, such as performance on tests of getting vocabulary (词汇) or general information, increased until at the age of 60.
The study of 2, 000 men and women lasted over seven years. The people attending the study, aged between 18—60, were asked to do picture puzzles, remember words and stories and mark patterns in letters and signs.
Twenty-seven has long had unhelpful connotations (隐含意义), as it is the age at which many popular musicians died, including Jimi Hendrix, Jim Morrison, Brian Jones, Janis Joplin and Kurt Cobain. Which of the following is NOT true?
| A．People's mental abilities perform best at 22. |
| B．People's mental abilities begin to get worse at 27. |
| C．People's mental abilities have nothing to do with age. |
| D．Many people don't know what cause mental abilities' falling. |
The tests of the study were planned to find __________.
| A．the difference of males and females |
| B．ways to help the people find better jobs |
| C．better ways to treat dementia of some old people |
| D．age has an effect on performance of mental abilities |
People at the age of 27 perform worse mainly at __________.
| A．reasoning, speed of thought and space imagination |
| B．getting vocabulary or general information |
| C．all of the mental abilities |
| D．only the ability of memory |
What is the best title of the passage?
| A．Twenty-seven Has Long Been Unhelpful |
| B．Mental Abilities Start to Fall at 27 |
| C．27 Musicians Died Earlier |
| D．How to Get Better Mental Abilities |
Hundreds of years ago, a Roman army came north from England to make war on Scotland. The Scots, a brave people, love their country. They fought hard to drive the enemy out of Scotland. But there were too many of the Romans. It looked as if the Romans would win.
One night, the leader of the Scots marched his soldiers to the top of a hill. “We will rest here tonight, my men,” he said, “Tomorrow we will fight one more battle. We must win, or we will die.”
They were all very tired. So they ate their supper quickly and fell asleep. There were four guards on duty, but they were very tired, too, and one by one, they fell asleep.
The Romans were not asleep. Quickly they gathered at the foot of the hill. Slowly they went up the hill. Closer they came to the sleeping Scots. They were almost at the top. A few minutes more the war would be over. Suddenly, one of them put his foot on a thistle (蓟). He cried out and his sudden cry woke the Scots. In a minute they were on their feet and ready for a battle. The fighting was hard, but it did not last long. The Scots wiped out the Romans and saved Scotland.
The thistle is not a beautiful plant. It has sharp needles all over it. Few people liked it. But the people of Scotland liked it so much that they made it their national flower.Hundreds of years ago, the Romans ____ .
| A．came from the north through England to make war on Scotland |
| B．came to the north Scotland from England to make war on Scotland |
| C．came from the north of England to fight the Scots |
| D．came to the north from the south of Britain to fight the Scots |
At the shout of a Roman soldier, all the Scots who were asleep at the hill ____ .
| A．began to fight the Romans hard |
| B．stood up without putting on their shoes and began to fight |
| C．woke and rose immediately, ready to fight |
| D．put their feet into their shoes at once and were ready to fight |
The result of the war is that ____ .
| A．the Romans killed all the Scots |
| B．the Scots were defeated |
| C．the Scots were driven out of Scotland |
| D．the Scots defeated the Romans |
The Scots made thistle their national flower because thistle ____ .
| A．is lovely, though not beautiful |
| B．gave them happiness |
| C．is a kind of useful plant |
| D．helped the Scots in wiping out the Romans |
It was in 1865 that two Frenchmen were looking into the future. Edouard de Laboulaye, who studied history, admired the United States greatly. Frederic Auguste Bartholdi was a famous artist. De Laboulaye was thinking about 1876, when the country he respected so much would celebrate its 100th birthday. What gift would be good enough for the people of France to give? Right away, Bartholdi thought of a giant statue.
Bartholdi kept thinking about a statue for several years. Then, in 1871, he visited the United States and saw the perfect place for a huge statue. It was Bedloe’s Island in New York.
The project — the Statue of Liberty — got started almost immediately, and Bartholdi went home to France to begin work. However, the statue was not finished in time for the 100th birthday. The United States Congress approved (批准) the use of Bedloe’s Island on February 22, 1877. During the 100th celebration in 1876, the arm of the statue that would hold the torch was shown in Philadelphia. In 1879 the huge head was put on display in France. For the face of the statue, Bartholdi used his mother as a model.
The statue was finally completed in 1884. The work had been difficult enough, but then some really hard work began. The statue had to be taken apart and packed into boxes. It was not until May 1885 that the statue — in pieces — left France for its new home.
The statue arrived in June. However, the Americans fell behind on their part of the project. They hadn’t raised enough money for building the base of the statue. People wondered if the country really needed or wanted such a gift. Finally, though, the money was raised and the base was completed. The last piece of the statue was put in place on October 28, 1886.What’s the right order of the following events?
a. The arm of the statue that would hold the torch was shown in Philadelphia.
b. The United States Congress approved the use of Bedloe’s Island.
c. The huge head of the statue was put on display in France.
d. Bartholdi visited the United States.
| A．d a b c | B．d b a c |
| C．b a c d | D．b d a c |
When did the work on the statue begin?
| A．As soon as Bartholdi thought of it. |
| B．After the United States Congress agreed to it. |
| C．After Bartholdi saw Bedloe’s Island. |
| D．Not until the US had raised enough money. |
What happened after the Statue of Liberty was completed?
| A．It was put together for shipping. |
| B．It was taken apart and packed for shipping. |
| C．It was cleaned up for shipping. |
| D．It was put in place on its base in France. |
How many years did it take for the Statue of Liberty to be put in place on its base after it was completed?
| A．nineteen. | B．fifteen. |
| C．one. | D．two. |
My son was a second-grader. He went to school by bus every day. He was the first student on in the morning, as we were farthest from school, and the last student off in the evening. I was a teacher myself and it was a comfort to realize the school staff (职员) were all working as hard as I was to provide a safe learning environment.
One day I came home from work and waited for my son to get home for a long time. Then I called the school. “Perhaps he’s just a bit late,” said the secretary. “I will call the driver to see if those children are home.” A few minutes later, I answered the phone to hear that the other students were home. Then I called his friends’ parents, to see if perhaps he had gotten off at their stop to play. The answers were all “No.”
By that time, it was dark and I was scared. My home was in the mountain areas, and it was said that a wolf had come up somewhere. My husband wasn’t at home, so I forced myself to calm down and decided to go out to look for him. I was about to go out when the telephone rang; it was from the driver. “He’s okay,” I heard. “He was asleep on the seats in the back, under a couple of jackets. Since it’s dark, can he spend the night with my family?”
I was relieved and agreed. Since my son had a great adventure, the school started giving a copy of the list to the driver, so he could check off the children’s names when they got off the bus. I think highly of the school for taking the cautionary (警戒的) step ahead; it is a sign of their concern for students, parents, and staff.From Paragraph 1 we learn that ________.
| A．the author’s son went home by bus every after-noon |
| B．the author’s son came to school earlier than other students |
| C．the author’s home was farther than that of any other student |
| D．the author was a teacher in her son’s primary school |
At first the secretary thought ________.
| A．the author’s son was still at school |
| B．the school bus would arrive in a while |
| C．the author’s son was at his friend’s home |
| D．there might be something wrong with the school bus |
The author’s son probably spent the night _________.
| A．in the bus | B．at his own home |
| C．at the driver’s home | D．in the secretary’s office |
The author wrote the text to ________.
| A．praise the school for its quick action |
| B．thank the bus driver for his kindness |
| C．complain about the secretary of the school |
| D．show her concern for kids safety |
In recent years, there has been a steady attack on salt from the doctors: salt is bad for you—regardless of your health. Politicians also got aboard. “There is a direct relationship,” US Congressman Neal Smith said, “between the amount of sodium(钠) a person consumes and heart disease, circulatory(循环的) disorders, stroke and even early death.”
Frightening, if true! But many doctors and medical researchers are now beginning to feel the salt scare has gone too far. “All these remarks and cry about salt is unnecessary,” Dr. Dustan insists. “For most of us it probably does not make much difference how much salt we eat.” Dustan’s most recent short-term study of 150 people showed that those with normal blood pressure experienced no change at all when placed on an extremely low-salt diet, or later when salt was reintroduced. Of the hypertensive(高血压的) patients, however, half of those on the low-salt diet did experience a drop in blood pressure, which returned to previous level when salt was reintroduced.
“An adequate to somewhat excessive(过度的) salt intake has probably saved many more lives than it has cost in the general population,” said Dr. John H Laragh. “So an opinion that the whole population should avoid salt makes no sense.”
Medical experts agree that everyone should practice reasonable “moderation”(节制) in salt consumption. For the average person, a moderate amount might run from four to ten grams a day, or roughly 1/2 to 1/3 teaspoons. One to two grams of salt would come from the natural sodium in food. The rest would be added in processing, preparation or at the table.
“Na is not your enemy,” says Comek’s Dr. Laragh. “Salt is the No.1 natural component of all human tissue, and the idea that you do not need it is wrong. Unless your doctor has proven that you have a salt-related health problem, there is no reason to give it up.”Why is salt attacked by doctors and politicians?
| A．It’s unnecessary. |
| B．It does no good to human health. |
| C．It is hated by most people. |
| D．It will always lead to heart disease and circulatory disorders. |
From Dr. Dustan’s study in Paragraph 2 we can infer that _____.
| A．a low-salt diet may be good to some patients |
| B．the amount of salt intake has nothing to do with one’s blood pressure |
| C．the reduction of salt intake can completely cure a hypertensive patient |
| D．an extremely low-salt diet makes no difference to anyone |
In the 3rd paragraph, Dr. Laragh implied that _____.
| A．people should not be afraid of taking much excessive salt |
| B．doctors should not advise people to avoid salt |
| C．an adequate to somewhat excessive salt intake is suggested to ill people |
| D．excessive salt intake has killed some patients in the general population |
What is the experts’ advice for average people on salt consumption?
| A．They should increase salt intake through sodium pills. |
| B．They should avoid salt as often as possible. |
| C．They should consume 1/2 to 1/3 teaspoons of salt a day. |
| D．They needn’t care about how much salt they consume. |
What is the main idea of the passage?
| A．The salt scare is not reasonable. |
| B．The cause of hypertension is disclosed. |
| C．The moderate use of salt is recommended. |
| D．Salt consumption is to be avoided. |
I am a good mother to three children. I have tried never to let my profession stand in the way of being a good parent.
I no longer consider myself the center of the universe. I show up. I listen. I try to laugh. I am a good friend to my husband. I have tried to make marriage vows（誓约）mean what they say. I am a good friend to my friends, and they to me. Without them, there would be nothing to say to you today.
So here’s what I wanted to tell you today: Get a life. A real life, not a desire of the next promotion（提升）, the bigger paycheck, the larger house.
Get a life in which you are not alone. Find people you love, and who love you. And remember that love is not leisure（空闲）, it is work. Pick up the phone. Send an e-mail. Write a letter. And realize that life is the best thing and that you have no business taking it for granted.
It is so easy to waste our lives, our days, our hours, our minutes. It is so easy to exist instead of to live. I learned to live many years ago. Something really, really bad happened to me, something that changed my life in ways that, if I had my choice, it would never have been changed at all. And what I learned from it is what, today, seems to be the hardest lesson of all.
I learned to love the journey, not the destination. I learned to look at all the good in the world and try to give some of it back because I believed in it, completely and totally. And I tried to do that, in part, by telling others what I had learned.
By telling them this: Read in the backyard with the sun on your face. Learn to be happy. And think of life as a deadly illness, because if you do, you will live it with joy and passion as it ought to be lived.The best title of this passage probably is _______.
| A．Love your friends | B．Live a real life |
| C．Don’t waste time | D．Be a good mother and wife |
How did the author form her view of life?
| A．By working and social experience. |
| B．Learning from her friends. |
| C．Through an unfortunate experience. |
| D．Because of her children and husband. |
The underlined sentence “It is so easy to exist instead of to live” in the fifth paragraph probably has the same meaning as ______.
| A．it is so easy to keep alive but not to live a real life. |
| B．it is very hard to live a real life |
| C．it is so easy to make a living. |
| D．it is more difficult to exist than to live a happy life. |
What’s the author’s attitude towards work?
| A．Try our best to serve others. |
| B．To earn enough money to make life better. |
| C．Try our best to get higher position and pay. |
| D．Don’t let it affect your real life. |
It can be inferred from the passage that _______.
| A．the author is a success in personal life. |
| B．the author didn’t try her best to work well. |
| C．the author spent all her time caring for her children. |
| D．the author doesn’t travel much |
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