阅读下列短文,从每题所给的A、B、C、D 四个选项中,选出最佳选项.

A

Flying

Ever since I was old enough to dream, I have imagined myself soaring with the eagles. My love of flying has shaped the way I live and the person I have become. Two years ago, that passion rocketed to new heights when I had the opportunity to visit Embry Riddle Aeronautical University in

Arizona. For a whole week I lived in a college dorm, roomed with a total stranger and---best of

all---I flew!

My group took part in activities ranging from learning about the history of aviation (航空) to

flying in state-of-the-art pilot training simulators (模拟装置). At least once a day, I devoted myself

to learning one of the world’s best training aircrafts, the Cessna 182. Not only did I receive thorough

ground instruction, but I also got to fly. In total, I flew five hours to receive my private pilot’s license.

In that one joyous and oh-so-short week, my passion for aviation grew even stronger. Now, whenever I see a plane flying overhead, I feel a sense of pride thinking I’ve done that.

During my time in and above the Arizona desert, I learned not only about the mechanics and

techniques of aviation, but also about myself and how I see the world. As I floated in that seemingly

endless sea of air, I became aware of the variety and complexity of the humanity below. On the

ribbons of roadways, each tiny car carried people with hopes and dreams. I wondered if any of those

people had ever wished to fly like an eagle. Then I realized that each must have his or her own

dreams and ambitions. That’s what makes us unique. We try to respond to something special inside

us. I also realized that I was especially fortunate to be making my own dream come true.

Everywhere I go, I hear, “Do what makes you happy and you will be happy.” It sounds like

standard advice, but I’ve really thought about it and taken it to heart. I couldn’t care less about how

much money I make or what benefits I receive. I know that I am already in hot pursuit(追逐) of my

dreams. And, even if they change, even if they finally don’t involve aviation, I’ll always aim to fly

with the eagles.

1.Two years ago, the author ___________.

A. was admitted to a university

B. stayed in a university for one week

C. saw the launch of the rocket

D. made good friends with an astronaut

2.Paragraph 2 is mainly about _________.

A. which aircraft the author got to fly

B. how the author learned to fly

C. what the author learned about simulators

D. why the author got a pilot’s license

3.According to the author, ________ makes people unique.

A. flying like an eagle

B. trying something special

C. having their own dreams

D. learning unusual techniques

4.From the last paragraph, we can learn that the author _________.

A. cares a lot about money and benefits

B. brings happiness to others

C. pursues his aims whatever happens

D. offers advice wherever he goes

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

New research shows that kids from low-income families may be falling behind their peers because an important part of their brains is underdeveloped.

Researchers from MIT’ s McGovern Institute for Brain Research compared the brains of 12-and 13-year-olds from rich families with the brains of their peers from lower-income families. They found that one particular area of the brain—the neocortex(新皮质),which plays a key role in memory and learning ability—is thinner in children from lower-income households.

This is a crucial part of the brain for young students, who are often tested based on their ability to recall large chunks of information. Children who had a thinner neocortex performed poorly on standardized tests,researchers found.More than 90% of high-income students scored above average on a statewide math and English/Language Arts standardized test,compared with less than 60% of low-income students.Differences in cortical(脑皮层) thickness could account for almost half of the income-achievement gap in this sample,researchers wrote.

“Just as you would expect, there’ s a real cost not living in a supportive environment. We can see it not only in test scores,in educational attainment,but within the brains of these children,”says psychological scientist John Gabrieli,a professor of brain and cognitive sciences at MIT and one of the study’s authors.

Since a 2011 study published by Stanford University professor Sean Reardon found that the gap between standardized test scores of high-income and low-income students has grown by about 40% since the 1960s,there’ s been a lot of research aimed at finding links between income and achievement, rather than race alone. The MIT study found low-income children were equally likely to have a thinner neocortex,no matter their races.

Gabrieli and his co-authors can’ t say exactly why poor children’ s brains develop differently because there are too many possibilities to count.Their findings do,however,underline the importance of early intervention(干预) to ensure that low-income kids get the tools they need to succeed.

1.What’ s the function of the first paragraph?

A. To list some findings.

B. To give some advice.

C. To do some comparisons.

D. To show the main idea of the text.

2.What does the underlined word “crucial” in Paragraph 3 mean?

A. Special. B. Important.

C. Separate. D. Unknown.

3.What John Gabrieli says in Paragraph 4 mainly shows the importance of    .

A. cognitive ability

B. educational attainment

C. having developed brains

D. living in supportive surroundings

4.What is the main idea of the passage?

A.Wealthy parents do better in raising children.

B.Differences exist between poor children and rich ones.

C.Poor children study harder due to their financial conditions.

D.Poor children have thinner neocortex than their wealthy peers.

Everyone knows that death is natural, but do you have any idea of the process of dying? Modern scientists divide the process of dying into two phases---clinical or temporary death and biological death. Clinical death occurs when the vital organs, such as the heart or lungs, have ceased to function, but have not suffered permanent damage. The organism can still be revived(复活). Biological death occurs when changes in the organism lead to the “breaking up” of vital cells and tissues. Death is then unchangeable and final.

Scientists have been seeking a way to prolong the period of clinical death so that the organism can remain alive before biological death occurs. The best method developed so far involves cooling of the organism, combined with narcotic sleep. By slowing down the body’s metabolism(新陈代谢), cooling delays the processes leading to biological death.

To illustrate how this works, scientists performed an experiment on a six-year-old female monkey called Keta. The scientist put Keta to sleep with a narcotic. Then they surrounded her body with ice-bags and began checking her body temperature. When it had dropped to 28 degrees the scientists began draining blood from an artery. The monkey’s blood pressure decreased and an hour later both the heart and breathing stopped: clinical death set in. For twenty minutes Keta remained in this state. Her temperature dropped to 22 degrees. At this point the scientists pumped blood into an artery in the direction of the heart and started artificial breathing. After two minutes Keta’s heart became active once more. After fifteen minutes, spontaneous(自发的)breathing began, and after four hours Keta opened her eyes and lifted her head. After six hours, when the scientists tried to give her a penicillin injection, Keta seized the syringe and ran with it around the room. Her behavior differed little from that of a healthy animal.

1.For a person who suffers from the clinical death _________

A.he is still very much alive.

B. he can not avoid final death.

C. his most important organs are damaged.

D. he still has the possibility of getting back to life.

2. Scientists try to make the time of clinical death longer in order to _________

A.cool the organism.

B.delay the coming of biological death.

C. slow down the body’s metabolism.

D. bring vital cells and tissues back to active life.

3. How did the scientists put Keta into clinical death?

A.By putting her to sleep, lowering her temperature and draining her blood.

B.By surrounding her body with ice-bags and draining her blood.

C.By lowing her blood pressure and stopping her heart from beating.

D.By draining her blood, lowering her blood pressure and stopping her breathing.

4.All of the following indicate that the monkey has almost restored to her original physical state except the fact that _________

A.her heart beat again.

B.she rejected a penicillin injection.

C. she regained her normal breath.

D.she acted as lively as a healthy monkey.

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