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An annoying problem for humans, who like to boast (夸耀) about all the distant planets and moons we have explored, is that we've never taken a good look right under our noses.The inside of the earth is relatively close but how can we get there?

The deepest oil well enters a mere six miles into the crust (地殼)  (the center of the earth is about 4,000 miles deeper).Russian scientists dug the deepest hole in Siberia," but bottomed out at about 7.5 miles below the surface.The Mohole project, a U.S.plan in the 1950s, called for drilling a hole 25 miles down to the boundary be??tween the hard rocks of the crust and the soft mantle (地幔).Sadly the project involved govern??ment supporting.

It gets harder and harder to drill deep into the earth because rocks get softer and softer. Hard but easily broken at the surface, rocks become plastic at depth, and the pressure caused by the weight of the overlaying crust — about 52,800 pounds per square inch at a depth of ten miles, makes further drilling impossible.

What little we know about the inside of the earth (like the fact that there' s a crust, a mantle, and a core) comes from indirect evidence, such as the analysis of earthquakes.

So maybe it' s time for a thorough new method to explore the earth's inside.Scientist David Stevenson says we should forget about drilling holes.Instead, we should open a crack (裂縫). 

Stevenson suggests digging a crack about a half mile long, a yard wide, and a half mile deep (not with a shovel) but with an explosion on the scale of a nuclear bomb.Next, he'd pour a few hundred thousand tons of molten (融化的) iron into the crack, along with a robot.The iron, thicker than the surrounding crust, would move downward at about 16 feet per second, carrying the robot with it and opening the crack deeper and deeper.The iron mass would drop for about a week and 2,000 miles to the outer edge of the earth core, the robot sending out data to the sur??face.

Stevenson compares his idea to space explo??ration."We're going somewhere we haven't been before," he says."In all possibility, there will be surprises."

This idea can probably be put in.the drawer marked with Isn't Going To Happen.The robot would have to survive temperatures that would melt pretty much anything.But Stevenson's idea may inspire a new look at an old problem.Great things can come from what seems like impossible ideas.

Going inside the earth is ________ than going into space.

A.more interesting B.more possible    C.easier            D.more challenging

How deep have we gone into the earth until now?

A.6 miles.         B.4,000 miles. C.7.5 miles.        D.25 miles.

Which of the following is TRUE about David Stevenson's idea?

A.It is an inspiring but not practical idea now.

B.It is a practical proposal that has come into use now.

C.It is a good proposal that will soon be put into practice.

D.It is a false theory that cannot be carried out at all.

What might be the most suitable title for the text?

A.An Annoying Problem for Humans

B.To the Center of the Earth

C.The Mohole Project

D.David Stevenson' s Proposal

【小題1】D

【小題2】C

【小題3】A

【小題4】B


解析:

【小題1】從第一段以及全文可知深入地殼比進(jìn)入太空更加富有挑戰(zhàn)性。。

【小題2】由第二段的but bottomed out at about 7.5 miles below the surface得知答案。

【小題3】從最后一段可知Stevenson的計(jì)劃很鼓舞人心但目前不具備操作性。

【小題4】全文主要講的是怎樣深入地球進(jìn)行探索。

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科目:高中英語(yǔ) 來(lái)源:2012-2013學(xué)年重慶市三峽名校聯(lián)盟高一下學(xué)期期中考試英語(yǔ)試卷(帶解析) 題型:閱讀理解

As we get older, most of us worry about grey hair, wrinkles and maintaining a youthful body. But people often don’t realize the voice needs looking after. Here, Mr. Rubin, a voice expert, reveals how to keep your voice youthful.
Drink more fluid and avoid spicy food
You need water for the vocal cords(聲帶) to vibrate(振動(dòng)) well. The body must be kept hydrated enough to make the vocal cords operate well. Drinking 1.5 liters of water a day at intervals of 15 minutes is very important. Mr. Rubin advises avoiding foods with an annoying effect on the stomach, such as onions, chili, fizzy drinks and chocolate.
Rest the throat and talk regularly
The vocal cords can be scared if you use your voice during a bad cough. If you have a case of laryngitis(喉炎) with a cold, you should rest your voice for a day or two, and seek medical advice.
Simply staying sociable and using your voice is very important. “As older people get less mobile, they can become socially isolated and speak less.” says Mr. Rubin. “The elderly need to communicate with people more. By using the vocal cords, they enable the ageing process to slow down. ”
Improve your posture
Good posture is essential to keeping the voice young, so we’d better stand properly. Exercise helps you take deeper breaths as it means there is better airflow through the voice box, producing a stronger tone.
Sing in the shower
This is one of the best ways to preserve your voice, as it keeps the larynx muscles strong while the steam lubricates(使?jié)櫥? the voice box. “Singing is gymnastics for the voice,” says Mr. Rubin. Joining a choir is one of the best ways to preserve a youthful tone.
【小題1】Mr. Rubin gives us advice on ________.

A.ways to keep us from aging
B.ways to talk with other people
C.ways to keep our voice youthful
D.prevention of diseases caused by talking too much
【小題2】Which of the following statements is TRUE in the opinion of Mr. Rubin?
A.We should stand properly to keep our voice youthful.
B.Professional singers’ voices tend to age quickly.
C.The steam can do great harm to the voice.
D.Taking more onions can keep us healthy.
【小題3】To protect the voice, the old people should       .
A.get less mobileB.communicate with others more
C.a(chǎn)void using the voiceD.lie in bed more
【小題4】What can we learn from the text?
A.Most people have realized the importance of protecting voice.
B.It’s hard to keep the vocal cords strong through exercise.
C.Singing in the shower is among the best ways to keep our voice youthful.
D.Shouting now and then benefits our vocal cords.

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科目:高中英語(yǔ) 來(lái)源:2015屆重慶市三峽名校聯(lián)盟高一下學(xué)期期中考試英語(yǔ)試卷(解析版) 題型:閱讀理解

As we get older, most of us worry about grey hair, wrinkles and maintaining a youthful body. But people often don’t realize the voice needs looking after. Here, Mr. Rubin, a voice expert, reveals how to keep your voice youthful.

Drink more fluid and avoid spicy food

You need water for the vocal cords(聲帶) to vibrate(振動(dòng)) well. The body must be kept hydrated enough to make the vocal cords operate well. Drinking 1.5 liters of water a day at intervals of 15 minutes is very important. Mr. Rubin advises avoiding foods with an annoying effect on the stomach, such as onions, chili, fizzy drinks and chocolate.

Rest the throat and talk regularly

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Simply staying sociable and using your voice is very important. “As older people get less mobile, they can become socially isolated and speak less.” says Mr. Rubin. “The elderly need to communicate with people more. By using the vocal cords, they enable the ageing process to slow down. ”

Improve your posture

Good posture is essential to keeping the voice young, so we’d better stand properly. Exercise helps you take deeper breaths as it means there is better airflow through the voice box, producing a stronger tone.

Sing in the shower

This is one of the best ways to preserve your voice, as it keeps the larynx muscles strong while the steam lubricates(使?jié)櫥? the voice box. “Singing is gymnastics for the voice,” says Mr. Rubin. Joining a choir is one of the best ways to preserve a youthful tone.

1.Mr. Rubin gives us advice on ________.

A.ways to keep us from aging

B.ways to talk with other people

C.ways to keep our voice youthful

D.prevention of diseases caused by talking too much

2.Which of the following statements is TRUE in the opinion of Mr. Rubin?

A.We should stand properly to keep our voice youthful.

B.Professional singers’ voices tend to age quickly.

C.The steam can do great harm to the voice.

D.Taking more onions can keep us healthy.

3.To protect the voice, the old people should       .

A.get less mobile                         B.communicate with others more

C.a(chǎn)void using the voice                     D.lie in bed more

4.What can we learn from the text?

A.Most people have realized the importance of protecting voice.

B.It’s hard to keep the vocal cords strong through exercise.

C.Singing in the shower is among the best ways to keep our voice youthful.

D.Shouting now and then benefits our vocal cords.

 

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    I handed her my boots and stuck out my foot. Like most children, I expected grown-ups to do all the work. After much pushing, she managed to get the first one into place and then, with a sigh, worked the second one on too.

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A. was losing confidence in the little girl

B. gradually lost patience with the little girl

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