happens in the world makes us happy and sad by turns. A. That B. What C. Which D. Whether 题目和参考答案——青夏教育精英家教网—

题目内容

________ happens in the world makes us happy and sad by turns.

A. That B. What C. Which D. Whether

解析:

本题考查引导主语从句的连接词。that引导主语从句只起连接作用，在从句中不作任何成分，无意义，但不能省略。what除引导主语从句外, 还在从句中作成分。which指一定范围内的“哪一个”；whether意为“是否”。根据句意“世上的事喜忧交替”可知答案为B

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It is common for older people to forget things. Now an American study has found that memory starts to fail when we are young adults. People younger than thirty years of age usually do not know that they are starting to forget information. But scientists from the University of Michigan say the loss of memory has usually already started.

Researchers say people do not observe this slow reduction in mental ability until the loss affects their everyday activities.

Denise Park led the new study. She directs the Centre for Aging and Cognition at the Institute for Social Research at the University of Michigan. Her team studied more than 350 men and women between the ages of twenty and ninety years. The study identified people in their middle twenties with memory problems.

She says young adults do not know they are forgetting things because their brains have more information than they need.

But she says that people in their twenties and thirties are losing memory at the same rate as people in their sixties and seventies.

Ms. Park says people between the ages of sixty and seventy may note the decrease in their mental abilities. They begin to observe that they are having more trouble remembering and learning new information.

The study found that older adults are more likely to remember false information as being true. For example, they remembered false medical claims as being true. Younger people remembered hearing the information. But they were more likely to remember that it was false.

Ms. Park is now using modern imaging equipment to study what happens in the brains of people of different ages. She is studying what parts of the brain older adults use for different activities compared to younger adults. Ms. Park says mental performance is a direct result of brain activity and brain structure. She says keeping the brain active is important. She hopes future studies will identify ways to improve the operation of our aging minds.

The passage is meant to _____________.

A. emphasize the importance of exercising the brain

B. analyze the difference between different age groups on the loss of memory

C. reveal the decrease in mental ability of young adults as well as older adults

D. introduce effective ways to improve memory

According to the passage, young adults differ from older adults in that ________.

A. they lose their memory at a slower rate

B. they rarely realize they have memory problems

C. their brains can store much more information

D. all of the above

Which of the following statements is NOT TRUE?

A. Not until the loss of memory affects their daily activities, do people notice the decrease in their mental abilities.

B. People begin to lose memory in their twenties.

C. Older people tend to remember false information as being true.

D. Younger people find it easier to remember the information that is proven false.

It can be inferred from what Denis Park says that ______.

A. mental performance can be improved

B. mental ability is determined entirely by brain structure

C. people of different ages use different parts of the brain for memorizing

D. different parts of the brain are responsible for different mental activities

Which of the following is a suitable title for the passage?

A. The Mysterious Brain B. The Ability to Forget

C. Memory Reduction D. Mental Performance

We have seen that pesticides(杀虫剂)now pollute soil, water, and food, and that they have the power to make our rivers fishless and our gardens and woodlands silent and birdless. Man, however much he may like to pretend the opposite, is part of nature. Can he escape a pollution that is now so thoroughly spread throughout our world?

We know that even single exposure(暴露) to these chemicals, if the amount is large enough, can cause extremely severe poisoning. But this is not the major problem. The sudden illness or death of farmers, farm workers, and others exposed to enough quantities of pesticides is very sad and should not happen. For the population as a whole, we must pay more attention to the delayed effects of taking in small amounts of the pesticides that unseeably pollute our world.

Responsible(负责的) public health officials have pointed out that the biological effects of chemicals are increasing in amount over long periods of time, and that the danger to man may depend on the amount of the exposures received throughout his lifetime. For these very reasons people easily take no notice of the danger. It is human nature to shake off what may seem to us a future disaster(灾害). "Men are naturally most impressed by diseases which have obvious signs," says a wise physician, Dr. Rene Dubos, "yet some of their worst enemies slowly come near them unnoticed."

Which of the following is closest in meaning to the underlined sentence?

A. Man doesn't care about what happens in nature.

B. Man acts as if he does not belong to nature.

C. Man can avoid the effects of environmental pollution.

D. Man can escape his responsibilities for environmental protection.

People are likely to take no notice of the delayed effects of exposure to chemicals because________.

A. limited exposure to them does little harm to people's health

B. the present is more important to them than the future

C. the danger does not become seen clearly and immediately

D. humans are able to bear small amounts of poisoning

It can be concluded from what Dr. Dubos says that________.

A. people find hidden diseases difficult to deal with

B. attacks by hidden enemies are likely to be deadly

C. diseases with obvious signs are easy to cure

D. people are likely to take no notice of hidden dangers caused by pesticides

________ happens in the world makes us happy and sad too.

A. That B. What C. Which D. Whether

I’d like to share the strangest of the strange moments I’ve had here．

Back in 2003 I had a pet rabbit named Alaska．Due to the rules the landlord had set，he had to be kept in the basement(地下室)．One night I went downstairs to feed him．Keep in mind I’ve always thought the basement was frightening．As I was facing his cage and putting the bowl of water inside，a big shadow appeared behind me，as if a big，tall man were standing behind me．I turned around and nobody was there，but I got the distinct(清晰的)feeling that I was being watched．I basically dropped the water bowl and ran upstairs shouting for my mom．Ever since then I can’t go down there alone．

Once I was trying to get to sleep，and I slept with the lights off．All of sudden I wanted to leave the room eagerly，but I couldn’t get out of my bed，I was too scared．The feeling of someone looking closely at me was so upset，I was physically afraid to move or breathe．I opened my curtains to let the street light in，thinking the light would help me feel better to move．That did nothing．I must have sat there on my bed for about fifteen minutes before I got up．I didn’t sleep in there that night．I’ve never felt anything so upset!

Then there are all the little things，like seeing things in the comer of my eye，hearing doors open or close when I’m home alone，and the feeling of being watched．Once when my sister wasn’t home(we share a room)I heard someone breathing from her bed and heard the sheets rustle(沙沙声)．Last week，I felt someone patting me in the shoulder when I was alone in my room．Sometimes I’ll be looking something and I’ll see one or more contorted(扭曲的)，angry faces．

I realize that when one is looking for something to happen they can make things happen or imagine it．These are the moments in which I know nothing was imagined，so I wanted to share them and get your opinions．Thanks so much．

【小题1】The writer to the text seems to .

A．tell us his strange experiences

B．tell us what happens in his bedroom

C．tell us an interesting story

D．tell us what happens in his apartment

【小题2】Which of the following may be the reason why the writer is afraid to go to the basement?

A．Because his pet is dangerous．

B．Because a big shadow may appear behind him．

C．Because there is a big，tall man there．

D．Because his landlord forbids him to go there．

【小题3】We can learn from the third paragraph that .

A．the writer slept with the lights on that night

B．the street light helped the writer a lot

C．he was too scared to get out of his bed at one time

D．he didn’t sleep at all that night

【小题4】From the text，we can see the writer believes his experiences are .

A．real B．not real

C．creative D．imaginative

At a meeting, a well-known speaker lifted up a bill of 20 dollars before starting his speech.
Facing 200 people, he asked, “Who wants this 20-dollar bill?” A great many hands were put up. Then he continued to say, “I intended to give it to any one of you, but allow me to do a thing before giving it to you.” Suddenly he crumpled （揉）it into a round mass. Then he asked, “Who wants it? ” Still some hands were lifted up.
He asked again, “Well, how could it be if I do it like this?” he threw the bill onto the ground, stepped on it and twisted it. As he picked it up, the bill had become not only dirty but wrinkled.
“Who still wants it?” Still a few people put up their hands.
“My dear friends, you have had a meaningful class. No matter how I treated this bill, you still want it, because it is worth 20 dollars. On your life road, you may be knocked down（击垮） or even broken into pieces by your determination or unfavorable situations. We may feel ourselves worth nothing, but, my darling, remember that whatever happens in the future, you should never lose your value（价值） in the God’s heart. You’re particular ---- never forget it.”
【小题1】How many times did the speaker ask the people whether they wanted the bill?

【小题2】The underlined word “wrinkled” in the third paragraph probably means _______.

A．broken	B．having small lines or folds in it
C．flat	D．having holes on it

【小题3】The speaker did this test in order to _____________.

A．tell the audience that one should never lose one’s own value

B．tell the audience that God values money most

C．test if some of the audience were extremely interested in money

D．play a trick on the audience

【小题4】What would the speaker probably talk about next?

A．How money can make people crazy.

B．How to avoid being knocked down in one’s life.

C．How to keep one’s value of life.

D．How to give a meaningful class

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