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.

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

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

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.

Reading is not the only way to gain knowledge of the work in the past. There is another large reservoir (知识库) which may be called experience, and the college students will find that every craftsman (工匠) has something he can teach and will generally teach gladly to any college student who does not look down upon them. The information from them differs from that in textbooks and papers chiefly in that its theoretical (理论的) part -- the explanations of why things happen -- is frequently quite fantastic (神奇的) . But the demonstration (示范) and report of what happens, and how it happens are correct even if the reports are in completely unscientific terms. Presently the college students will learn, in this case also, what to accept and what to reject. One important thing for a college student to remember is that if Aristotle could talk to the fisherman, so can he.

  Another source of knowledge is the vast store of traditional practices handed down from father to son , or mother to daughter, of old country customs ,of folklore (风俗). All this is very difficult for a college student to examine, for much knowledge and personal experience is needed here to separate good plants from wild grass.The college students should learn to realize and remember how much of real value science has found in this wide, confused wilderness and how often scientific discoveries of what had existed in this area long age.

1. In the last paragraph the phrase "this wide, confused wilderness" refers to _____.

A.personal experience

B.wild weeds among good plants

C.the information from the parents

D.the vast store of traditional practices

2. Which of the following statements is supported by the passage?

A.The college students have trouble separating good plants from wild grass

B.Craftsman’s experience is usually unscientific

C.The contemptuous (傲慢的) college students will receive nothing from craftsmen

D.Traditional practices are as important as experience for the college students

3. The author advises the college students to ______ .

A.be contemptuous to the craftsman

B.be patient in helping the craftsman with scientific terms

C.learn the craftsman’s experience by judging it carefully

D.gain the craftsman’s experience without rejection

4. The main idea of this passage is about ________.

A.what to learn from the parents             B.how to gain knowledge

C.why to learn from craftsman               D.how to deal with experience

 

On the border, a pack of wild dogs circled the soldiers for food. The leader of the pack was a gray- and-white dog called Nubs. He was   11  and hardly able to stand. Marine major Brian Dennis looked   12  and saw that there was a knife wound in his chest.

Dennis couldn't stand seeing the dog   13_He and his men immediately treated the wound, and  gave Nubs medicine.Nubs pulled through but was still in   14 .The next day, the team had to  15  . Ten days later, Dennis' unit was back, and so was Nubs. He was still   16 ,but the men fed him and  played with him.

Before long the unit once again left for the front 70 miles away. Nubs, slowly but 17  , followed them far into the trackless wasteland _ 18  the men lost sight of him.Two days later, beyond Dennis'   19  , he saw Nubs just outside the outpost(前哨).The dog had  20  him across 70 miles of frozen desert to meet with the friend who had   21 his life.From then on Nubs and the men   22 in the same place, and ran around in the same ruins(废墟).                          

Until an order came that they were not   23_ to have pets, Dennis decided to make sure the dog would  24 _ to live the good life.So he quickly raised $4,000 from his family and friends to 25 Nubs to America.

A year later, when Dennis and the dog were   26  in California, at first Nubs didn't   27  the guy.But within minutes, the dog jumped into Dennis' arms, jumping   28   again and again to lick his friend's face.

A little love and concern in the middle of   29 will not save a violent world. But small stories, like the story of a soldier and a clog, hold a  30  of a harmonious(和谐的)world.

1.                A.shaking         B.waiting         C.barking   D.resting

 

2.                A.lower          B.better          C.clearer   D.closer

 

3.                A.worry          B.suffer          C.fear D.starve

 

4.                A.surprise        B.control         C.pain D.anger

 

5.                A.leave          B.drill            C.fight D.walk

 

6.                A.dirty           B.weak           C.thin  D.tired

 

7.                A.suddenly       B.happily         C.easily D.determinedly

 

8.                A.unless          B.since           C.until D.after

 

9.                A.imagination      B.reach          C.sight     D.ability

 

10.               A.caught         B.tracked         C.guarded   D.found

 

11.               A.loved          B.started         C.saved D.taken

 

12.               A.traveled        B.met           C.grew D.slept

 

13.               A.allowed        B.expected       C.needed   D.required

 

14.               A.go             B.like            C.try   D.continue

 

15.               A.lead           B.fly             C.drive D.show

 

16.               A.reunited        B.interviewed     C.watched   D.gathered

 

17.               A.notice          B.believe         C.recognize  D.bother

 

18.               A.out            B.about          C.around    D.up

 

19.               A.time           B.danger         C.war   D.space

 

20.               A.way           B.view           C.concern   D.promise

 

 

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