68. The author of this passage is primarily concerned with ________.

　　 A. the signs and treatment for dehydration　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

　　 B. the long distance runners who need help

　　 C. how to manage water intake during a marathon

　　 D. a 284year-old woman who died after a Boston Marathon

67. By writing the passage, the author tries to _________.

　　 A. close some of the burger and pizza restaurants

　　 B. draw the public attention to the problem of rats

　　 C. prevent the rats from growing up

　　 D. make advertisement for the classic horror film The Rats

答案　 64.B　 65.B　 66.C　 67.B

Passage 25

(河南省开封市2008届第四次模拟考试D篇)

If you're training for a marathon　 a proper plan for water intake (摄入) is important . Of course , there's the risk of dehydration (脱水) . But athletes now know they can also get into trouble by drinking too much. Too much water intake can lower levels of sodium (钠) in the blood　 The death of a 28-year-old woman following the Boston Marathon caught the attention of many runners and led to new research.

　　 Experts advise long distance runners to replace the liquids they sweat out. Their goal is to try to keep someone from not getting dehydrated by more than 2 percent of their body weight.

　　 One technique for deciding how much water you need is to get the exact numbers. Runners have to weight themselves before and after a run to determine how much water they've lost. If their weight drops by more than 2 percent , they have not drunk enough water.

Hypothermia (体温过低) occurs when runners drink so much water that blood salt levels drop off . A study published last year tested 488 runners who completed the Boston Marathon and found 13 percent of them had dangerously low blood salt levels. The first sign that runners may notice is slightly swelling in the hands. They can’t get their rings off , and then they might feel sick. They may not remember where they are. In fact , most runners get enough salt to get back to normal levels by eating just one meal after a run. Contrary to the old advice that runners should drink as much as they can to prevent dehydration , the new research has shown that the body is a remarkable machine that actually tells you you need water when you feel thirsty.

66. We may infer from the passage that ________.

　　 A. Well's Disease will finally end the world

　　 B. pizzas and crisps will become poisonous

　　 C. rats will endanger human beings' life

　　 D. young people are to blame for the rat population

65. What is the human population now according to the writer?

　　 A. 60 million.　　 B. 58 million.　　　　 C. 35 million.　　　　 D. 2 million.

64. Where did the rodents use to search for food?

A. In the Street .　　　　　　　　　　　 B. Under the ground.

　　 C. From the trash cans.　　　　　　　　 D. In burger shops.

75．The last sentence probably implies that　　　　　 .

　　　 A．no one will invest in developing locally appropriate crops in Africa

　　　 B．researchers have no interest in developing dry-land crops

　　　 C．research on locally appropriate crops in the Third World may be profitable

　　　 D．There is less water resource in the Third World

答案　 71. A　 72.B　 73.C　 74.D　 75.A

Passage 24

(河南省开封市2008届第四次模拟考试C篇)

Britain is facing a sharp rise in its rat population as growing numbers of people leave fast food scraps in the street , an environment group warned . Keep Britain Tidy said the rodents(啮齿动物) were stopping their traditional hunts underground and were roaming the streets ,tempted by discarded burgers ,pizzas and crisps. "The rat population is on the rise and soon it'll be as common to see a rodent on our street as it is to see a dog or a cat," said group Director ,Sue Nelson. The practice of dumping fast food litter and scraps on the street rather than in the trash-with young men the worst offenders-was behind the rise. According to the National Rodent Survey in 2005, Britain's rat population has grown by nearly one quarter since 2000 and is now estimated at 60 million , two million more than the human population. On average a rat can give birth every 24--28 days and just a single pair of rats can produce a colony of 2,000 a year. Around 200 people a year get Weil's Disease--an infection which can lead to liver or kidney(肝肾) failure and eventually death and which is arrived in rat's waste. To highlight the issue , Keep Britain Tidy launched a cinema ad entitled "How close do you want them to get?" The advertisement gave a shocking image of a young woman sleeping in a bed of rots, echoing the nightmare scene from James Herbert's classic horror tale The Rats, in which mutant rodents begin to prey on(捕食)humans.

74．The author mentions all the problems caused by dams EXCEPT　　　　　 .

　　　 A．fewer fish 　　　　　　 B．less grazing land

　　　 C．less floodplain agriculture 　　 D．less farming land

73．The author suggests that governments will have no excuse for their careless ignorance in the future because　　　　 .

　　　 A．the ecological destruction will be known to the public by researchers

　　　 B．the ecological destruction will no longer be a problem in the future

　　　 C．the future is an information age

　　　 D．governments will face greater challenge in the future

72．Which of the following statements is NOT true for meeting our basic needs for water?

　　　 A．Water resource should be used more reasonably.

　　　 B．More dams should be built in river basins.

　　　 C．More wetlands should be protected from destruction.

　　　 D．More dry-land crops could be developed in Africa.

71．What’s the main idea of this passage?

　　　 A．The engineering solutions to water resource and their limitation.

　　　 B．The challenge for the future.　

　　　 C．The basic means of controlling water.

　　　 D．The challenge for developing crops.