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當(dāng)前位置： 2022年吉林省長(zhǎng)春市普通高中高考英語(yǔ)二模試卷> 試題詳情

One CT image of a brain changed science and medicine forever.
   Half a century ago，the first CT image of a patient lifted the veil （面紗） of invisibility that covers the interior of the human body，providing scientists a window on our innards （內(nèi)臟） unlike any before.
   Today，doctors in the United States alone order more than 80 million scans per year.X-ray computed tomography，or CT，is frequently the quickest way of getting a handle on what's causing a mysterious problem.CT scans can find out heart disease，tumors，blood clots，internal bleeding and more.The technique can give surgeons a heads-up about what they will encounter inside a patient，and guide treatment for cancer and other diseases.
   "It answers so many questions quickly.That's why it's used，" says medical physicist Cynthia McCollough of the Mayo Clinic in Rochester，Minn.
   A CT scan involves thousands of X-ray measurements taken from multiple angles.Here's how it works：A source of X-rays moves around the body，sending a beam （光束） of radiation through bone，blood and tissue，while moving detectors measure the beam that makes it through.
   Different materials in the body absorb X-rays differently.The calcium （鈣） in bone actively absorbs X-rays，for example，while soft tissues absorb less.So when the data collected by the detectors are joined together by a computer，it can form a cross-sectional view of what's inside based on where X-rays are absorbed more or less.Moving the table holding the patient so that the X-ray beam and detectors slide along the body enables 3-D reconstructions of organs and other parts.
   Over the years，scientists have continually improved the technology，making it faster and higher resolution （清晰度），and cutting the amount of radiation that patients receive.These improved CT scans have painted ever more detailed landscapes of the human body.It's hard not to be impressed by the beauty of the inner world that the scans bring to the surface.

（1）What does the underlined word "heads-up" in paragraph 3 mean？

A．Measure.
B．Choice.
C．Forecast.
D．Treatment.
（2）How does CT help surgeons to detect problems？

A．By using different materials to absorb X-rays.
B．By collecting and sending data to the computer.
C．By checking the amount of calcium in the bone.
D．By scanning what's inside based on different X-rays absorption.
（3）Which of the following can reflect the improvement in X-rays technology？

A．Lower speed.
B．More radiation.
C．Higher resolution.
D．Fewer details.
（4）What is the writer's attitude towards CT scans？

A．Doubtful.
B．Positive.
C．Disapproving.
D．Indifferent.

【考點(diǎn)】說(shuō)明文．

【答案】C；D；C；B

【解答】

【點(diǎn)評(píng)】

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發(fā)布：2024/5/27 14:0:0組卷：7引用：1難度：0.5

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1．"An apple a day keeps the doctor away." Similarly，if we drink a little more water every day，we may find that we need to go to the doctor less often.A healthy diet is made up of water and different kinds of foods.We know that healthy foods like fruits，vegetables and fish ，are important as they offer energy and fiber，without giving us much fat and sugar.But why is water important？
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（1）From the text，we know water can carry

.
A．energy and fibre in our bodies
B．fruit，vegetables and fish in our bodies
C．sugar and fat out of our bodies
D．poisons and waste out of our bodies
（2）Lack of water caused many people to put on weight because

.
A．It makes them hungry
B．they think they are hungry and eat too much
C．Water has no calories
D．they think they are thirsty and eat less
（3）Doctors suggest that we should

.
A．eat less food and drink less water
B．not eat food and just drink water
C．eat less food and drink more water
D．eat more food and drink more water
（4）Which of the following is NOT mentioned in the text？

A．People should drink water and not eat fruit.
B．Some health problems start because of a lack of water.
C．Fruit provides us with energy and fiber .
D．Drinking more water may stop people from overeating.
發(fā)布：2024/9/22 4:0:8組卷：2引用：2難度：0.6
解析
2．How to Raise a Child Who Loves Reading Give your kids good books to read.
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Keep away from lightweight （內(nèi)容平庸的） books，because they may teach them to turn away from anything that makes their brains work too hard.A diet of lightweight books does not promote the patterns of thought that produce intellectual and personal excellence.
   （2）

Kids love listening to their parents read，even as they get older，so don't stop reading aloud to your children just because they can read on their own.This is a perfect opportunity to challenge their abilities，vocabulary and worldviews by reading books.
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   With hand-held devices （3）

Parents should have these devices powered down and phones put away，and ask them to pull out their books.Once kids finally get into their books，it creates the same quiet，peaceful atmosphere home.
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Ask every family member，even the youngest，what they have read that day and what they've learned from it.This will arouse discussion and debate about the issues raised in the books.
   Give our kids paper books，not e-books.
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A．Read aloud to your kids.
B．Take chances to challenge your kids.
C．That's where parental responsibility comes in.
D．All these are very real parts of the reading experience.
E．Parents should inform their kids of the harmfulness of hand-held devices.
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發(fā)布：2024/9/21 3:0:11組卷：0引用：1難度：0.5
解析
3．閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容（1個(gè)單詞）或括號(hào)內(nèi)單詞的正確形式。
China is the native place of tea.Originally，tea（1）

（use） as a kind of medicine instead of a drink.Later as the ancient Chinese people explored further into the features of tea，they separated it（2）

herbs （藥草）and made it into a kind of drink and （3）

（gradual） it developed into Chinese tea culture.
Records show（4）

the custom of tea drinking，which started in the Western Han Dynasty （朝代），became （5）

fashion for people with high （6）

（society） position during the Wei Dynasty.In the Tang Dynasty it was common （7）

（drink） tea.And people tried out even more （8）

（way） to drink tea.In the Song Dynasty，tea planting and trade were on the increase and the technique of （9）

（make） tea was greatly improved.By the Yuan Dynasty，drinking tea （10）

（become） something very common in everyday life.In the Ming and Qing dynasties，people drank tea in almost the same way as we do today.
發(fā)布：2024/9/21 3:0:11組卷：7引用：3難度：0.5
解析

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