Each year, road accidents kill a million people and injure millions more . The economic costs are greatest for developing countries . Earlier this year , the United Nations called for a campaign to improve road safety .
One way to avoid accidents is better driving . Another is better roads and bridges . Engineers in the Unites States have designed ten new concrete mixtures that they think could make bridges last longer .
Professor Paul Tikalsky leads the experiments by a team at Pennsylvania State University . He says bridges made of concrete now last about twenty-five to thirty-five years . But he says the new mixtures might extend that to seventy –five or even one-hundred years .
Concrete is made of stone , sand , water and cement(水泥). The materials in the cement hold the concrete together . Ancient Romans built with concrete . Yet strengthened concrete bridges did not appear until the late 1800s . People keep looking for new ways to improve concrete . Professor Tikalsky says it is one of the most complex of all chemical systems .
The new mixtures designed by his team contain industrial waste products . He says these make the concrete better able to resist damage from water and salt over time . One of the products is fly ash . This is released into the air as pollution when coal is burned .
Professor Tikalsky says particles (颗粒)of fly ash are almost exactly the same size and chemical structure as Portland cement . This is the most costly material in concrete . So using fly ash to replace some of it would save money .
The federal government is paying for part of the research . Engineers anywhere can use the technology . Professor Tikalsky says some of the ideas have already been put to use in China , the Philippines and other countries .Why did the United Nations launch the campaign ?
| A．Because the United Nations wanted to reduce road accidents and economic costs |
| B．Because two million people were killed in the accidents . |
| C．Because engineers wanted to design ten new concrete mixtures . |
| D．Because the United Nations made bridges of the new mixtures which could last for about 20 to 35 |
years .What does the underlined word “ this ” in the sixth paragraph refer to ?
| A．Fly ash | B．Portland cement | C．Sand | D．Chemical |
Which of the following statements is TRUE ?
| A．Ten new concrete bridges have already been built in the United States . |
| B．A new concrete bridge could last 50 more years than an ordinary concrete one . |
| C．People didn’t know how to build with cement until the late 1800s . |
| D．Water and salt won’t do any damage to bridges over time . |
What does the passage mainly tell us ?
| A．The causes of road accidents . | B．The advantages of fly ash |
| C．The measures of avoiding road accidents | D．Latest information about long-life concrete bridges |
Across the globe, single parent homes are on the rise. In the US, the 2000 census (人口普查) showed 24.8 million, or nearly 24 percent of the nation’s 105.5 million households, were traditional two-parent homes. By comparison, 9.8 million households, or 9 percent of all US households were headed by an adult raising a child alone. The 1990 census showed 26 percent of homes were led by a married mother and father, and 8 percent of homes were led by a single parent.
Similar increases occurred in other countries. In the UK, lone-parent homes increased from 3.3 percent in 1990 to 5.5 percent in 1999. Single parent households in Australia rose from 5.8 percent in 1990 to 7.6 percent in 1999. Belgium saw the increase from 1.8 percent to 2.7 percent during the same period of time. These countries tend to have greater acceptance of the single parent because there are fewer nearby family members to disapprove, Riche, a Census Bureau director, said.
Just as in the US, those changes raised new questions about how involved govenment should be in helping single parent families. Some research suggests children raised in two-parent families are better off than those who depend on one.
“The position of one-parent families in any country is very much a gender (性别) issue-women’s opportunities, especially working-class women on low income,” said Sue Cohen, coordinator (协调员) of the Single Action Parents Network in England.
5.Not considering the exact number of the single-parent families, which country saw the fastest rise rate in 1999, compared with 1990?
A.UK. B.Australia. C.America. D.Belgium.
6.What is the cause of the rise of single parent families across the globe?
A.The nearby family members have a favourable opinion.
B.A lone parent is well off enough to support his /her children.
C.A lot of problems have arisen in two-parent families.
D.We cannot get enough proving information from the text.
7.Which of the following is TRUE about the increase of single parent families according to the passage?
A.It will somewhat limit the growing population of younger generation.
B.Governments should take actions about the social problems brought about by it.
C.Single parent families are not looked down upon in any country mentioned here.
D.Generally speaking, the single parents needn’t worry since they are highly paid.
8.Which of the following diagrams correctly shows the rise of single parent families in the US from
1990 to 2000?
Does a drink a day keep heart attacks away? Over the past 20 years, numerous studies have found that moderate alcohol consumption, s ay, one or two beers, glasses of wine or cocktails daily helps to prevent coronary heart disease. Last week a report in the New England Journal of Medicine added strong new evidence in suport of that theory. More important, the work provided the first solid indiction of how alcohol works to protect the heart.In the study, researchers from Boston’s Brigham and Women’s Hospital and Harvard Medical School compared the drinking habits of 340 men and women who had suffered recent heart attack with those of healthy people of the same age and sex. The scientists found that people who sip one to three drinks a day are about half as likely to suffer heart attacks as nondrinkers are. The apparent source of the protection: those who drank alcohol had higher blood levels of highdensity lipoproteins, the socalled good cholesterol, which is known to prevent heart disease.
As evidence has mounted, some doctors have begun recommending a daily drink for patients of heart diseases. But most physicians are not ready to reommend a regular happy hour for everyone. The risks of teetotalling(绝对戒酒) are nothing compared with the dangers of too much alcohol, including high blood pressure, strokes and liver troubles—not to mention violent behaviour and traffic accidents. Moreover, some studies suggest that even moderate drinking may increase the incidence of breast and colon cancer. Until there is evidence that the benefits of a daily dose of alcohol outweigh the risks, most people won’t be able to take a doctor’s prescription to the neighbourhood bar or liquor store.
1.The medical article quoted in the first paragraph indicates .
the way in which alcohol can help the heart
how a couple of cocktails daily can stop heart problems
why alcoholic drinks are dangerous to one’s health
that reports on the advantages of alcohol were misled
2.Experiments showed that nondrinkers had .
| A．larger amounts of good cholesterol |
| B．smaller amounts of good cholesterol |
| C．higher blood pressure |
| D．lower blood pressure |
3.According to the passage, moderate drinking .
is recommended by most doctors for heart patients
should be allowed on prescription
is still not medically advisable
is not related to liver problems
4.The main theme of this passage is .
the change in recent drinking habits
the connection between cancer and alcohol
whether moderate drinkers outlive nondrinkers
whether alcohol may be good for one’s health
His eyes nearly in tears from the crush of fellow travelers at Guangzhou's train station, Hong Tao said things were much better on Sunday, after days of waiting for a train to his home in Hubei province.
"I think it's fine today, and everything is going smoothly," the 28-year-old said. "I thought it would be really crowded but it has turned out to be OK."
Chinese authorities say they expect 1.3 million people to travel out of Guangzhou's train station over the next few days, as they rush to get home by Wednesday, the eve of Lunar New Year.
Hong's optimism may have been helped by the blue skies that emerged over Guangzhou on Sunday for the first time in a week.
Last week, a rare winter storm paralyzed China's transportation system as millions tried to get home to celebrate the holiday — the only chance for many migrant workers to see their families all year.
China's state-run Xinhua news agency said Friday that 95 percent of rail traffic had "returned to normal." But Guangzhou's train station remained packed with a backlog of hundreds of thousands of travelers hoping to get home for the holiday.
A young woman was stepped on in a stampede (人群蜂拥) at the train station Friday, and later died of her injuries, according to Xinhua. Video of the situation on Friday showed crowds of people screaming, elbowing each other, in some cases sobbing and collapsing in the rush to get a slot (狭缝，窄孔) on a train.
China Sunday announced it has organized over 300,000 People's Liberation Army forces to southern China in what it described as a "war on winter weather".
The government also announced a $700 million plan to help farmers whose crops have been destroyed.
6. How many days is it from the day this article was made to the Lunar New Year?
A. Two days. B. Three days. C. Four days. D. Five days.
7. What can we know about the weather condition of last week in Guangzhou?
A. Sunny with blue sky. B. Rainy for a whole week.
C. Heavily snowy. D. Rainy first and snowy now.
8. Why are there so many passengers in Guangzhou’s train station?
A. Because the heavy snow stopped the passengers from leaving the station.
B. Because the passengers didn’t hope to leave the station right now.
C. Because the passengers hoped to leave for their hometown.
D. Because the holiday was coming near.
9. Where is Hong Tao from?
A. Shandong province. B. Hubei province.
C. Guandong province. D. Not mentioned.
10. What can we infer from the passage?
A. On Friday, a young man was dead because of crowds’ elbowing, screaming.
B. China’s Government have arranged the PLA forces to help.
C. The government of China have offered money to help farmers enjoy the new year.
D. Many crops have been destroyed by the crowds of people.
There was a time in my life when beauty meant something special to me. I guess that would have been when I was about six or seven ye ars old, just several weeks or maybe a month before the orphanage turned me into an old man.
I would get up every morning at the orphanage, make my bed just like the little soldier that I had become and then I would get into one of the two straight lines and march to breakfast with the other twenty or thirty boys who also lived in my dormitory.
After breakfast one Saturday morning I returned to the dormitory and saw the house parent chasing the beautiful monarch butterflies who lived by the hundreds in the azalea (杜鹃花) bushes strewn around the orphanage.
I carefully watched as he caught these beautiful creatures, one after the other, and then took them from the net and then stuck straight pins through their head and wings, pinning them onto a heavy cardboard sheet.
How cruel it was to kill something of such beauty. I had walked many times out into the bushes, all by myself, just so the butterflies could land on my head, face and hands so I could look at them up close.
Every year when the butterflies would return to the orphanage and try to land on me I would try and shoo (用"嘘"声赶走,吓走)them away because they did not know that the orphanage was a bad place to live and a very bad place to die.
1. According to the passage, how did the author find the orphanage?
A. A favorable place to live. B. A bad place to live.
C. A comfortable place for butterflies. D. A favorable place for the old.
2. How did the people go to their meals?
A. By car. B. On foot. C. Queuing in two ways. D. Any way they wanted.
3. Which of the following statements is TRUE, according to the passage?
A. I love everything of beauty when I was old.
B. The people in the orphanage stand in line doing everything.
C. The azalea bushes were planted by the people living in the orphanage.
D. I shooed the butterflies away because I didn’t want them to be killed.
4. What can we infer from the first two paragraphs?
A. I love beauty when I was about six or seven years old.
B. I became old very soon in the orphanage.
C. I had a very pleasant time in the orphanage.
D. I was tired with the life the way I lived in the orphanage.
5. What does the author think of the house parent?
A. Pitiless. B. Kind. C. Lovable. D. Beautiful.
Maggie was very glad that James was not a frequent visitor to the house. So far as the children were concerned, they had a mystery about him that stirred their imagination. He stirred 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. Instead, 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’s 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 mean. 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 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.
11. The underlined word “mercy” in the text most probably means _______.
A. loss B. wonder C. lucky thing D. terrible thing
12. 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
13. What do we know about James’ behavior?
A. He was a kind man, with love for the family.
B. He was generous, especially towards his brother.
C. He was anxious to please the family, especially the kids.
D. He was rude to his sister-in-law.
14. 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
15. The children did not realize that two of James’ wives _______.
A. had been dead B. suffered from loss of memory
C. had run away from him D. might appear again one day
粤公网安备 44130202000953号