Alzheimer's disease is a major national health problem. Nearly 2 million Americans over the age of 65 have Alzheimer's disease. It is a leading cause of death among the elderly. But Alzheimer's disease is not confined (限于) to the aged. There may be a million or more people under the age of 65 suffering from the disease.

At one time, people suffering from the disease were said to be "getting old". The disease was thought to be a natural part of growing old, but it is now known that Alzheimer's disease strikes young and old alike. It is an organic(器官的) disease that destroys brain cells.

Alzheimer's disease affects the patient's memory, speech, and movement. In the beginning stages of the disease, the patient may seem slightly confused. He may have trouble speaking. Then the patient's memory begins to fail. He may forget dates, telephone numbers, names and plans.

As the disease progresses, the patient may not recognize family and friends. These symptoms(症状) often cause terrible anxiety in the patient. He may feel lost and frightened. Sometimes the patient reacts with wild and bad behavior.

In the last stages of the disease, the patient may not be able to take care of himself. He may have lost the ability to speak and walk.

Some of the scientists think a virus causes Alzheimer's disease. At present, there is no cure for the disease. But there are ways to slow its progress. Exercise and physical treatment can help the patients of this disease.

50. Alzheimer's disease ____________.

A. a terrible part of the aging process                 B. is an organic disease that affects young and old

C. can be cured by physical treatment                D. causes high fever

51. All of the following are symptoms of Alzheimer's disease EXCEPT ____________.

 A. brain damage   B. difficulty in speaking     C. loss of sight     D. loss of the ability to walk

52. According to the passage, which of the following may be a cause of Alzheimer's disease?

A. Poisons produced by the brain.        B. Getting old.    C. A virus.        D. Lack of exercise.

A small group of people around the world have started implanting(移植) microchips to link the body and the computer.

Mr. Donelson and three friends, who had driven 100 miles from their homes in Loekport, New York, to have the implants put in by Dr Jesse Willemaire, whom they had persuaded to do the work, are part of a small group, about 30 people around the world, who have independently put in microchips into their bodies, according to Web-based reports.

At a shop William Donelson was having a four-millimeter-wide needle put into his left hand. “I’m set,” he said with a deep breath. He watched as the needle pierced(刺穿) the fleshy webbing between his thumb and a microchip was set under his skin. At last he would be able to do what he had long imagined; strengthen his body’s powers through technology.

By putting the chip inside—a radio frequency identification device (RFID)—Mr. Donelson would have at his fingertips the same magic that makes safety gates open with a knock of a card, and bridge and tunnel traffic flow smoothly with an E-Zpass. With a wave of his hand he plans to connect with his computer, open doors and unlock his car.

Implanting the chip was relatively simple task but very meaningful to Mr. Doneselson, a 21-year-old computer networking student so interested in the link between technology and the body that he has data-input jacks(数据输入插空) inside his body. They might lead to an imagined future when people can be connected directly into computers. His new chip is enclosed in a glass container no bigger than a piece of rice and has a small memory where he has stored the words “Technology”.

Some doctors have done the piercing in people’s homes, and others have implanted chips in their offices after patients signed forms showing the fact that long-term studies have not been done on their safety. Piercers treat the implants much like any other medical operation steps, instructing people to keep the site dry, and advising them that swelling(肿) and redness should last a week.

69. With a RFID implanted, which of the following will Mr. Donelson be able to do?

Make a safety gate open with a knock of a card.

Make bridge and tunnel traffic flow smoothly with an E-Zpass.

Open doors and unlock his car with a wave of his hand.

Turn his body and brain directly into computers.

70. The underlined word “they” in paragraph 5 refer to “___________”.

       A. glass containers                             B. implanted computer chips

       C. data input jacks                                    D. computer and net working students

71. Which of the following would be the best title for the passage?

       A. High Tech, Under the Skin                     B. A Needle, So Magic

       C. Donelson, a Powerful Man                     D. Data-input Jacks, Inside the Body

72. We can conclude from the passage that __________________.

Mr. Donelson has made a large sum of money by the piercing.

the Piercers are people working in the computer field

the piercing has no side effect and it will make people intelligent

the long term effects of these implants are not yet known

Imagine this: your child has just been involved in an emergency (紧急事件). You call 911. The medical workers rush in and begin asking you questions as they work to rescue your child. But they also ask questions about your child’s medical history. It’s hard to think clearly. You begin to answer and then end up saying, “I don’t remember. I don’t know.” So, many doctors suggest that parents keep a record of their children’s important health facts handy. This can often help the medical team make a better and more rapid diagnosis (诊断) of a problem at a time when time really counts.

The most important information to know is the child’s allergies (过敏). It is especially crucial if the child is allergic to any medicine---penicillin, for example. Food allergies can come into play, too, so make note of those as well. Children who have been hospitalized in the past may have developed latex (胶乳) allergies. Often this information can help emergency workers find a cause for problems like breathing difficulties.

Keep a list of any medicine, including what your child is now taking. Some medicines can cause an adverse reaction when they are taken together, so the doctors need this information before they give your child anything. You’ll need to know when the child took the medicine last and how much was taken.

It is also important to tell emergency workers about any health problem or illness your child has had. These pre-existing conditions can have a huge effect on the type of tests and treatment in an emergency.

Consider having any child who has a health problem wear a tag around his neck. This kind of rapid notice can help doctors who are providing emergency care, especially if your child suddenly becomes ill at day care, school, or a friend’s house.

63. How many types of allergies are mentioned in Paragraph 2?

   A. One.                          B. Two.                        C. Three.                      D. Four.

64. The underlined word “adverse” in Paragraph 3 probably means __________.

   A. beneficial                   B. harmful                    C. physical                   D. emotional

65. Which of the following is the main idea of this passage?

A. Everybody should learn something about first aid.

B. Children can easily develop allergies.

C. Doctors usually have difficulty saving a child in an emergency.

D. Parents should keep a record of their children’s health facts.

First the ground shook in Haiti, then Chile and Turkey. The earthquakes keep coming hard and fast this year, causing people to wonder if something evil (邪恶的) is happening underfoot.

It’s not.

While it may seem as if there are more earthquakes occurring, there really aren’t. the problem is what’s happening above ground, not underground, experts say.

More people are moving into big cities that happen to be built in quake zones, and they’re rapidly putting up buildings that can’t withstand (经受) earthquakes, scientists believe.

And around-the-clock news coverage (报道) and better earthquake monitoring make it seem as if earthquakes are ever-present.

“I can definitely tell you that the world is not coming to an end,” said Bob Holdsworth, an expert in tectonics (筑造学) at Durharn University in the UK.

A 7.0 magnitude quake in January killed more than 230,000 people in Haiti. Last month, an 8.8 magnitude quake--- the fifth-strongest since 1900—killed more than 900 people in Chile. And two weeks ago, a 6.0 magnitude quake struck rural eastern Turkey, killing at least 57 people.

On average, there are 134 earthquakes a year that have a magnitude between 6.0 and 6.9, according to the US Geological Survey. This year is off to a fast start with 40 so far—more than in most years for that time period.

But that’s because the 8.8 quake in Chile generated a large number of strong aftershocks, and so many quakes this early in the year skews (扭曲) the picture, said Paul Earle, a US seismologist (地震学家).

Also, it’s not the number of quakes, but their devastating (破坏性的) impacts that gain attention, with the death tolls (死亡人数) largely due to construction standards and crowding, Earle added. “The standard mantra (咒语) is earthquakes don’t kill people, buildings do, ” he said.

There have been more deaths over the past decades from earthquakes, said University of Colorado geologist Roger Bilham. In an opinion column last month in the journal Nature, Bilham called for better construction standards in the world’s big cities.

Of the 130 cities worldwide with populations of more than 1 million, more than half are prone (倾向于) to earthquakes, Bilham said.

Developing nations, where populations are booming, don’t pay attention to earthquake preparedness, Bilham said.” If you have a problem feeding yourself, you’re not really going to worry about earthquakes.”

Another reason quakes seem worse is that we’re paying attention more. The Haiti earthquake quickly followed by the 8.8 in Chile made everyone start to think.

But it won’t last, said US disaster researcher Deniis Mileti. “People are paying attention to the violent planet we’ve always lived on,” Mileti said.” Come back in another six months if there has been no earthquakes, most people will have forgotten it again. ”

73. What is the main idea of the article?

A. The number of earthquakes is increasing this year.     

B. The reasons why earthquakes are so devastating.

C. The reasons why recent earthquakes have struck large cities.

D. Why earthquakes seem to be more serious this year.

74. Which of the following is NOT a reason for the seeming increase in earthquakes this year，

according to the article?

A. Greater underground activity.      

B. A larger number of buildings prone to damage during earthquakes.

C. Around-the-clock news coverage.   

D. Better earthquake monitoring.

75. According to the article, it is safe to say that ______.

A. there is an evil force beneath the world’s surface

B. large cities are always built in quake zones

C. enough attention has been paid to reducing the impact of earthquakes

D. the earthquake in Chili caused many aftershocks.

76. According to the article, the greater damage of earthquakes this year can be mainly caused by ______.

A. the occurrence of larger earthquakes

B. insufficient warnings about earthquakes

C. poor construction standards and overcrowding

D. an increase in large cities

Every year when the Italian artist Michelangelo’s (1475－1564) birthday comes around, computer users all over the world are filled with fear and use their computers with care. Some may even choose not to turn on their computers on March 3rd. All this fear and care are just because a deadly computer virus(病毒) is ready to cause damages on that day.

What’s a computer virus then? Why do people get so afraid of it?

A computer virus is, in fact, a little program that is put into other programs and that does something bad. It is called a virus because, like any real-life viruses such as AIDS virus, it reproduces(繁殖) itself. And when these programs are run, the virus is brought to life. It hides itself in your computer system waiting for the right moment to make damages. And at the same time it keeps producing itself by copying itself onto other programs.

The Michelangelo virus waits until the artist’s birthday comes around, and then it will wake up to do very bad things like destroying you files. So next time when you turn on your computer, look out for computer viruses!

54. The Italian artist Michelangelo        .

A. was born six centuries ago             B. was born on March 3^rd, 1475

C. died six centuries ago                 D. died on March 3^rd, 1564

55. Why are computer users full of fear on March 3^rd? Because_________.

A. it is the birthday of a famous Italian artist  　　

B. a kind of computer virus will come on that day

C. a deadly computer virus called “ the Michelangelo virus” will wake up and then cause damages to computers on that day  

D. something will easily go wrong with computers

56. In fact, a computer virus is       .

A. a program which can help the computer avoid something dangerous.

B. a kind of real-life virus

C. a kind of virus like AIDS virus        

D. also a kind of program which is placed into other programs and which makes damages

57. In fact, a computer virus is ready to cause damages_________.

A. any day     B. only on March 3rd

C. on Fridays   D. only on some famous artists’ holidays

The Harp Seal is one of nature’s most beautiful and appealing (吸引人的) creatures(动物). Many years ago it was hunted for its fur. Hunting Harp Seals is now illegal.

The seals spend the summer months migrating (迁徙) in large groups. Harp Seals close their nostrils (鼻孔) and earholes when diving in water, but have to surface frequently to breathe. Their favourite place to rest is on the top of icebergs.

The female Harp Seal gives birth in February or March and feeds her pups for 14-18 days. Baby Harp Seals begin to lose their white fur at around six to eight weeks of age. As an adult, the Harp Seal has brown skin. At birth, Harp Seals weigh 12kg but can weigh up to 130kg as adults. Harp Seals eat small fish, shrimps and krill. However, they are able to switch from one food to another depending on what they can get as food. Males have a lifespan of 29 years while females usually live for longer than 30 years.

Since the Canadian Government introduced laws to protect the seal pups from hunters, their numbers have increased to more than one million. Now every year, thousands of tourists flock to the pack ice to witness the wonderful sight of new pups born in spring.

45.What is the passage mainly about?
　A.Hunting Harp Seal is not allowed      　B.Protecting Harp Seals
　C.Harp Seals                        　D.Lifespan  (人或动物的)寿命of Harp Seals
46.In the past Harp Seal were hunted _______.
　A.for their fur                  　B.for their meat
　C.because they danger to man     　D.because they were easy to catch
47.We know from the passage _______.
　A.grown Harp Seal only eat shrimps
　B.grown Harp Seal eat different foods that they can catch
　C.grown Harp Seal catch small fish to feed their young
　D.grown Harp Seal prefer to eat krill
48.The underlined word“witness”in the last sentence probably means ______.
　A.view 　B.hear 　C.report 　D.describe

Trees are useful to man in three very important ways: they provide him with wood and other products；they give him shade；and they help to prevent drought and floods.

Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important. In his eagerness to draw quick profit from the trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had.

Two thousand years ago, a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. When the empire fell to pieces, the country found itself faced by floods and starvation.

Even though a government realizes the importance of a plentiful supply of trees, it is difficult for it to persuade the villager to see this. The villager wants wood to cook his food with, and he can earn money by making charcoal(木炭) or selling wood to the townsman（城市居民）. He is usually too lazy or too careless to plant and look after trees. So unless the government has a good system of control, or can educate the people, the forests will slowly disappear.

This does not only mean that the villager’s sons and grandsons have fewer trees. The results are even more serious. For where there are trees their roots break the soil up—allowing the rain to sink in and also hold the soil, thus preventing it being washed away easily, but where there are no trees, the soil becomes hard and poor. The rain falls on hard ground and flows away on the surface, causing floods and carrying away with it the rich topsoil, in which crops grow so well. When all the topsoil is gone, nothing remains but a worthless desert.

61. The purpose that the writer wrote this article is to _________.

A. tell people the use of wood                                 

B. tell people the function of tree roots

C. warn that man mustn’t destroy forests any more    

D. explain how trees help man live a better life.

62. In the writer’s opinion, _________, or the forests will slowly disappear.

A. measures must be taken          

B. people shouldn’t draw benefit from the tree

C. government must realize the serious results           

D. unless no trees are cut down.

63. According to the article we know it is ________ to prevent the forests from slowly disappearing.

   A. necessary but impossible                                 B. necessary but difficult

   C. impossible and unimportant                                   D. difficult and impossible

64. In the last two paragraphs the writer wanted to make it clear that _________.

   A. where there are no trees, the soil becomes poor but soft

   B. where there are many trees, there are more floods

   C. where there are no trees, the land might become desert slowly

D. floods will make the land become desert

He was the baby with no name. Found and taken from the north Atlantic 6 days after the sinking of the Titanic in 1912, his tiny body so moved the salvage (救援) workers that they called him “our baby.” In their home port of Halifax, Nova Scotia, people collected money for a headstone in front of the baby's grave (墓), carved with the words: “To the memory of an unknown child.” He has rested there ever since.

But history has a way of uncovering its secrets. On Nov. 5, this year, three members of a family from Finland arrived at Halifax and laid fresh flowers at the grave. “This is our baby,” says Magda Schleifer, 68, a banker. She grew up hearing stories about a great-aunt named Maria Panula, 42, who had sailed on the Titanic for America to be reunited with her husband. According to the information Mrs. Schleifer had gathered, Panula gave up her seat on a lifeboat to search for her five children -- including a 13-month-old boy named Eino from whom she had become separated during the final minutes of the crossing. "We thought they were all lost in the sea," says Schleifer.

    Now, using teeth and bone pieces taken from the baby's grave, scientists have compared the DNA from the Unknown Child with those collected from members of five families who lost relatives on the Titanic and never recovered the bodies. The result of the test points only to one possible person: young Eino. Now, the family sees no need for a new grave. "He belongs to the people of Halifax," says Schleifer, "They've taken care of him for 90 years."

                                Adapted from People, November 25, 2002

69. What is probably the boy's last name?

       A. Schleiferi.       B. Eino.            C. Magda.       D. Panula.

70. Some members of the family went to Halifax and put flowers at the child's grave on Nov. 5, __________.

       A. 1912 B.1954             C. 2002            D. 2004

71. This text is mainly about how _________.

       A. the unknown baby’s body was taken from the north Atlantic

       B. the unknown baby was buried in Halifax, Nova Sotia

       C. people found out who the unknown baby was

       D. people took care of the unknown baby for 90 years

Animals are natural resources that people have wasted all through our history.

    Animals have been killed for their fur and feathers, for food, for sport, and simply because they were in the way. Thousands of kinds of animals have disappeared from the world forever. Hundreds more are on the danger list today. About 170 kinds in the United States alone are considered in danger.

    Why should people care? We need animals. And because once they are gone, there will never be any more.

    Animals are more than just beautiful and interesting. They are more than just a source of food. Every animal has its place in the balance of nature (生态平衡). Destroying one kind of animal can create many problems.

    For example, when farmers killed large numbers of hawks (老鹰), the farmers’ stores of corn and grain were destroyed by rats and mice. Why? Hawks eat rats and mice. With no hawks to keep down their numbers, the rats and mice multiplied(繁殖)quickly.

    Luckily, some people are working to help save the animals. Some groups raise money to let people know about the problem. And they try to get the governments to pass laws protecting animals in danger.

    Quite a few countries have passed laws. These laws forbid (禁止) the killing of any animals or plants on the danger list. Slowly, the number of some animals in danger is growing.

  61. Animals are important to us mainly because____ .

   A. they give us a source of food          B. they are beautiful and lovely

   C. they keep the balance of nature         D. they give us a lot of pleasure

  62. What has happened to the animals on the earth?

   A. Hundreds of kinds of animals have disappeared forever.

   B. Many kinds of animals have died out.

   C. About 170 kinds of animals have disappeared forever.

   D. All kinds of animals are in danger.

  63. Which of the following is NOT true?

   A. People care much about animals because they need them.

   B. Once a certain kind of animals is gone forever, there will never be any more.

   C. Killing all rats and mice may cause some problems.

   D. People must not kill any animals.

  64. What can we infer from the fact that quite a few countries have passed laws protecting animals indanger?

   A. Every person will know the importance of protecting wild animals.

   B. Animals in danger will not be killed any more.

   C. The number of some animals in danger will increase.

   D. Animals in danger will be kept away from people.

It’s 2035. You have a job, a family and you’re about 40 years old. Welcome to your future life.

Getting ready for work, you pause in front of the mirror, “Turn red,” you say. Your shirt changes from sky blue to deep red. Tiny preprogrammed electronic（智能电子元件） is rearranged in your shirt to change its color. Looking into the mirror, you find it hard to believe that you are 40. You look much younger. With amazing advances in medicine, people in your generation may live to be 150 years old. You’re not even middle-aged.

As you go into the kitchen and prepare to pour your breakfast cereal into a bowl, you hear: “To lose weight, you shouldn’t eat that,” from your shoes. They read the tiny electronic code（电子源码） on the cereal box to find out the nutrition details. You decide to listen to your shoes. “Kitchen, what can I have for breakfast?” A list of possible food appears on the counter as kitchen checks its food supplies.

“Ready for your trip to space?” you ask your son and daughter. In 2005 only specially trained astronauts went into space—and very few of them. Today anyone can go to space for day trip or longer vacation. Your best friend even works in space. Handing your children three strawberries each, you add, “The doctor said you need these for space travel.” Thanks to medical advices, vaccination shots（防疫针） are a thing of the past. Ordinary foods contain specific vaccines. With the berries in their mouths, the kids head for the front door.

It’s time for you to go to work. Your car checks your fingerprints and unlocks the doors. “My office. Autopilot,” you command. Your car drives itself down the road and moves smoothly into traffic on the highway. You sit back and unroll your e-newspaper. The latest news downloads and fills the viewer. Looking through the pages, you watch the news as video films rather than read it.

72. What changes the color of your shirt?

A. The mirror.              B. The shirt itself.         C. The counter.             D. The medicine.

73. How do the shoes know that you shouldn’t eat the breakfast cereal?

A. By pouring the breakfast into a bowl.           

B. By listening to the doctor’s advice.

C. By testing the food supplies in the kitchen.    

D. By checking the nutrition details of the food.

75. The strawberries the children eat serve as ______.

A. breakfast                 B. lunch                             C. vaccines                  D. nutrition

76. How is the text organized?

A. In order of time                                          B. In order of frequency.

C. In order of preference.                                D. In order of importance.