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in the streets in an effort to find her father, who died 30 years ago.
Not all cases of Alzheimer's disease look like this, but Alzheimer's is a serious disease that is said to be the
fourth or fifth leading cause of death for people over age 75.
It is said that about three percent of the U.S. population over age 65 have Alzheimer's. In the early stages,
people may exhibit short term memory loss. Some may experience changes in personality, easy to be angry.
As the disease progresses, patients might lose the ability to move and may be unable to speak or move at all.
This progressive disease generally lasts 8 to 10 years before death occurs.
While no one is certain what causes these changes in the brain's nerve fibers, their effect is certain.
Alzheimer's destroys not only the patients, but also spouses (配偶), friends and families.
What should you do if you notice progressive memory loss in yourself or a loved one? Have the person
examined by a doctor who is a specialist in the treatment of Alzheimer's disease.
Though many reasons other than Alzheimer's disease may cause memory loss, its early diagnosis (诊断)
and treatment may delay some of the most serious effects.
What feeling will you likely experience should a loved one suffer from Alzheimer's disease? A person will
often go through the various stages of sadness, shock, anger, and so on. If the spouse develops the disease,
you may experience hurt and disappointment when he or she doesn't remember you are married.
Life for the Alzheimer's patients and their loved ones will never be the same as the disease progresses,
bringing a deep sorrow, loss and even anger towards God. No matter what feelings are present, facing them
honestly will serve one better than burying them.
B. She was sad about the death of her father.
C. She can't search for her father without being watched.
D. She suffers from Alzheimer's disease.
B. their families and friends will experience mental sufferings
C. they will certainly die in 8 to 10 years
D. they will forget everybody but their spouses
B. from sadness,shock,anger, and so on
C. for a number of reasons
D. with changes in personality
B. it is still unknown what causes the changes in the brain's nerve fibers
C. nerve fibers in the brain will cause Alzheimer's disease
D. when one suffers from Alzheimer's disease, he will be buried
Bicycles are a great way to get around. They’re fun to ride, especially down hills. And, as you speed along the road, you might also think of ways in which you could improve your bike— make it safer, more efficient, or more comfortable. In fact, the two-wheeled machines make for some cool science projects.
This year's Intel International Science and Engineering Fair (ISEF), held last May in Cleveland, featured（had）three bicycle projects from three countries. Like many of the other experiments presented at ISEF, the bike projects showed that some of the most interesting scientific research often begins by taking a closer look at things you care about.
Renato Angulo Chu had even grander ambitions. The 12th-grader from Lima, Peru, wanted to address some of his country's economic troubles.
"I see a problem in my country," Renato said. "If you go to the forests in Peru, in some places you cannot find electricity. If you go with my bicycle, you can turn on the lights."
Renato, 16, spent 3 years designing his special Multibike. The device looks like a fixed exercise bike. It has wires fixed along the frame and a blender strapped(fastened) to the back. Turning the pedals operates the blender. The same principle can be used to sharpen knives or sweep city streets.
The Multibike can work either as a fixed bike or as a bicycle able to travel city streets and country roads. It's made from inexpensive materials, and the user gets exercise while pedaling to operate a machine.
"You pedal the bike, and you can mix any drink you want," Renato said. More importantly, he added, the same concept could be used to bring light to houses in remote regions of the rainforest.
19. What can we learn from the first paragraph?
A. Bicycles are the best way to go about
B. Bikes should be made more comfortable to ride.
C. You can improve your bicycle for science research.
D. Many inventions are connected with the bicycle.
20. Which of the following is true according to the passage?
A. ISEF is an exhibiton displaying bicycle experiments designed by students.
B. Looking closely at things you are concerned about can lead to scientific research.
C. Renato’s improvement of the bicycle has solved the country’s great problem.
D. Renato’s special bicycle will soon be put into use in remote areas.’
21. The underlined word “address” in the third paragraph probably has the same meaning as _______.
A. make address written B. give up C. work at D. speak at
22. Renato’s special Multibike has all the following EXCEPT ________.
A. making knives sharp B. mixing any kind of drinks
C. producing electricity D. operating a machine with its own electricity
23. It can be inferred that Renato’s special bicycle is mainly designed for ________.
A. distant areas in the rainforest without electricity.
B. the use of his own family to make life easier.
C. the competition of ISEF to win money to support remote rainforests
D. enough exercise by pedaling it
查看习题详情和答案>>To enjoy the scenery, Irene would rather spend long hours on the train _____ travel by air.
- A.as
- B.to
- C.than
- D.while
The thought of going back home was_______kept him happy while he was working abroad．
A．that B．all that C．all what D．Which
查看习题详情和答案>>Professor Barry Wellman of the University of Toronto in Canada has invented a term to describe the way many North Americans interact these days. The 1 is "networked individualism". This concept is not 2 to understand because the words seem to have opposite meanings. How can we be individuals and be networked 3 ? You need other people for 4 .
Here is 5 Professor Wellman means. 6 the invention of the Internet and email, our social networks 7 live interactions with relatives, neighbors and colleagues at work. Some of the _8 was by phone, but it was still voice to voice, person to person, in 9 time.
A recent 10 by the Pew Internet and American Life Project 11 that for a lot of people, electronic interaction through the computer has 12 the person-to-person interaction. However, a lot of people interviewed for the Pew's study 13 that's a good thing. Why?
In the past , many people were 14 that the Internet isolated (孤立) us and caused us to _15 too much time in the imaginary world of the computer. But the Pew's study discovered that the _16 is true. The Internet 17 us with more real people than expected -- 18 people who can give advice on careers, medical problems, raising children, and choosing a school or college. About 60 million Americans told Pew that the Internet 19 an important role in helping them make major life decisions.
Thanks to the computer, "networked individuals" are able to be 20 and together with other people -- at the same time!
1. A. saying B. term C. concept D. meaning
2. A. difficult B. different C. easy D. surprising
3. A. at the same time B. at once C. all the time D. once in a while
4. A. job B. food C. help D. networks
5. A. what B. how C. where D. which
6. A. After B. With C. Before D. As
7. A. included B. contained C. formed D. affected
8. A. appointment B. interaction C. invitations D. doings
9. A. true B. right C. wrong D. real
10. A. experiment B. study C. interview D. work
11. A. showed B. suggested C. learned D. added
12. A. ensured B. removed C. replaced D. exchanged
13. A. say B. discuss C. talk D. speak
14. A. excited B. surprised C. shocked D. worried
15. A. take B. spend C. cost D. stay
16. A. opposite B. thing C. outcome D. effect
17. A. connects B. offers C. shares D. informs
18. A. thankful B. considerate C. helpful D. friendly
19. A. finds B. plays C. catches D. possesses
20. A. united B. social C. separated D. alone
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