Your body is made up of little cells.Each one of these is alive. The big difference between your body and a man-made machine is that every part of your body is alive. Each cell has a job to do and nee 题目和参考答案——青夏教育精英家教网—

题目内容

　　Your body is made up of little cells（细胞）.Each one of these is alive. The big difference between your body and a man-made machine is that every part of your body is alive. Each cell has a job to do and needs energy to do it. If you count correctly, you will find the total is around 60,000,000 cells.

　　Nerve（神经）cells have long thread like shapes. Bone cells may have branching parts to link with other cells, while red blood cells are round and almost flat.

　　The cells are alive, but they do not live nearly as long as you do. Each cell lives for a while--from a few weeks to a year or more--and then it dies and a new cell is made to do the same. Only one kind of cell is not made after birth, the brain cells. So a new born baby is the brainiest person in the world, he has a full set of brain cells in thinking.

　　All our lives, we are storing more and more information in the brain. The fastest rate is at the time when we are young.

(1) Which one of the following is right?

[　　]

A．Everything in the world is made up of little cells.

B．Nothing has cells but people.

C．The man-made machine's cells are dead.

D．Your legs are made up of little ceils.

(2) The amount of cells in a human body is ______.

[　　]

A．about sixty billion

B．about sixty million

C．less than sixty million

D．more than sixty billion

(3) The shapes of cells in the human body are ______.

[　　]

A．about the same

B．almost round or flat

C．changed at any time

D．quite different

(4) _______ after birth.

[　　]

A．Each kind of cell can be made

B．Not all cells can be made

C．The brain cells are changeless

D．The new cells are made unlimitedly

答案：D;B;D;B
解析：

(1)因为在第一段谈到人的身体是由细胞构成的，而腿是身体的一部分，因此可以推出也是由细胞构成的．

(2)从第一段得知．

(3)从第二段中可以推断出这一点．

(4)因为在第三段谈到只有脑细胞是生来就有的，所以可以推断出这一点．

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根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多途选项。

　　Many people think of guys as being carefree when it comes to their appearance．But in fact, a lot of guys spend plenty of time in front of the mirror．They care just as much as girls do about their body image．

　　Body image is a person's opinions and feelings about his or her own body and physical appearance．　　1　　．You appreciate your body for its capabilities and accept its imperfections．

　　　　2　　．Here are some ideas：

　　Recognize your strengths．Different body types are good for different things．What does your body do well?Maybe your speed, strength, or coordination makes you better than others at a certain sport．That may be basketball, table tennis, mountain biking, dancing, or even running．Or perhaps you have non-sports skills, like drawing, painting, singing, playing a musical instrument, writing, or acting, 　　3　　．

　　Exercise regularly．Exercise can help you look good and feel good about yourself．Good physiques(体形)don't just happen．　　4　　．A healthy habit can be as simple as exercising 20 minutes to 1 hour three days a week．Working out can also lift your spirits．

　　Respect your body!Practicing good habits－regular showering; taking care of your teeth, hair, and skin; wearing clean clothes, and so on－can help you build a positive body image．

　　　　5　　．Your body is just one part of who you are．Your talent for comedy, a quick wit(智慧), and all the other things make you unique．So try not to let small imperfections take over．

A．Use this as an opportunity to discover what you're good at．

B．Be yourself．

C．Having a positive body image means feeling satisfied with the way you look．

D．Just explore talents that you feel good about．

E．They take hard work, regular workouts, and a healthy diet．

F．The good news is that self-image and body image can be changed．

G．So, what can you do to develop a positive body image?

1．________　2．________　3．________　4．________　5．________

阅读理解

　　Imagine your body is like the house you live in．Every day, your family creates rubbish．The rubbish builds up until it is put out for the weekly garbage collection．

　　Now, say you put three bags of garbage out．but because one of the collectors was away sick, only two bags are collected．You take the leftover bag inside to be put out again next week．The following week you put on another three bags．plus the leftover bag from last week．But again, only two bags are collected．Imagine this cycle is repeated over the following weeks．

　　This is a simple description of what happens to your body when your kidneys(肾脏)don't work efficiently．Your body is nol thoroughly emptied of waste products．Other areas of the bodv such as blood pressure and red blood cell production are affected and the insidious process that may lead to kidney failure begins．

　　It's not uncommon for people to lose up to 90％ of their kidney function before deveoping any symptoms．There may be no warning signs．This makes early detection(诊查)difficult．

　　Kidney's main job is to remote toxins(毒素)and unwanted water from our blood．Every day our kidneys clean an average of 200 litres of blood．Kidney failure may be a gradual and silent process, going unnoticed because there is no apparent pain．

　　Research shows that more than 35％ of the patients requiring dialysis(透析)do not see a kidney specialist before they have to do so．Some risk factors for kidney disease such as age and genetic make up are out of our control; however, some changes in lifestyle may help prevent kidney damage．Two major risk factors for kidney disease, diabetes(糖尿病)and high blood pressure, have been on the rise over the last few decades．Both conditions are chiefly affected by being overweight and not getting enough exercises, which are the potential risk factors for the kidney disease．

(1)

The author gives the example of the house we live in to indicate that ________．
[　　]
A．	it doesn't matter much if the waste in our body is not emptied in time
B．	our body will not produce any waste if our kidneys work efficiently
C．	it's important for our body to empty the waste in time every day
D．	it's safe and harmless for our body to keep some waste

(2)

The underlined word“insidious”in Paragrap 3 means ________．
[　　]
A．	smooth and safe
B．	apparent and fast
C．	gradual and unnoticed
D．	long and painful

(3)

We can infer that when we find some symptoms related to our kidneys, ________．
[　　]
A．	the kidney failure begins
B．	the kidneys can still work properly
C．	we have lost about 10％ of kidney function
D．	the kidneys may have been seriously damaged

(4)

How many risk factors of kidney disease are mentioned in the passage?
[　　]
A．	Six．
B．	Five．
C．	Four．
D．	Two．

(5)

Which of the following helps prevent kidney damage most effectively?
[　　]
A．	Go to see a kidney specialist shortly before dialysis starts．
B．	Take enough exercise and make early detection of kidney disease．
C．	Try to keep low blood pressure and a stable lifestyle．
D．	Go to hospital whenever you find any warning signs．

阅读理解

　　Your habits－both what you do and what you think－can cause many sleep problems．Here are four ways to help you sleep better．

　　Establish a sleep schedule．

　　Your body's internal timekeepers want you to get up at the same time every day, including the weekends, which is probably the most important step toward establishing good sleep patterns, because regular exposure to light in the morning is what sets the brain's alarm clock．You can mark your inner clock's point more clearly in the morning by taking a walk or by having breakfast beside a sunny window．

　　Regulate your body heat．

　　Even small ups and downs in body temperature play a large role in your biological rhythms．Sleep generally follows cooling state of the body's temperature cycle．One way to control body temperature is with exercise．A workout lasting 20 minutes before before bedtime may encourage sleep．Too much exercise：two or three hours before bedtime, however, can keep you awake．You might also try a hot bath well before bedtime, which can help influence body temperature．

　　Skip caffeine－even in mid afternoon．

　　Research suggests that the caffeine from three cups of coffee still has effects up to eight hours later．Some people are more sensitive to caffeine than others．Some are also more affected than they realized．Research subjects who say they can drink coffee before bed and sleep well actually don't sleep as well as they think when you test them in lab．Remember, too, that other substances－chocolate, cola and tea can cause poor quality rest．

　　Avoid nightcaps(睡前饮料)．

　　Yes, alcohol does help you fall asleep．But as it's metabolized(代谢)by the body, it releases a natural stimulate(刺激物)that disrupts sleep during the second half of the night．And the greater the quantity of alcohol consumed, the worse the disruption．

(1)

Getting up at the same time is most important because ________．
[　　]
A．	getting up at the same time is good to old people's health．
B．	everyone can have enough time to prepare for a day's work．
C．	the morning light to the body helps set the brain's alarm clock．
D．	people can have regular breakfast which is good for health．

(2)

If you want to sleep better at night, you CAN'T ________．
[　　]
A．	get up at the same time every morning．
B．	make your body heat regularly balanced．
C．	drink too much coffee before supper
D．	keep your inner timekeepers regular．

(3)

Which of the following is TRUE according to the passage?
[　　]
A．	The exposure to light can only establish the time to wake up．
B．	Having breakfast in darkness can fix our inner clock's point clearly．
C．	A workout can help you sleep, so, the more workout, the better．
D．	Too much exercise before bedtime cannot help make you sleep well．

(4)

In order to get a sound sleep we can ________．
[　　]
A．	take a hot bath before sleep
B．	drink some strong coffee
C．	take a long-distance running
D．	change our timetable to sleep

完形填空

　　What is in the drug that makes you sick or dead?For example, cocaine is harmful, but what makes it harmful?

　　I can’t tell you all about drugs, but I can 　　1　　 you think about them in this 　　2　　 way．Your body is a very complicated machine, 　　3　　 a lot of chemical machinery, all of which is finally turned 　　4　　 it all works together．Special chemicals, which we call drugs, can affect it in many different ways．

　　Some drugs are 　　5　　 when your body has a problem, as with disease－causing bacteria．Then someone may give you aspirin to keep your temperature from going too 　　6　　 or some penicillin(青霉素)　　7　　 it stops the growth of some kinds of bacteria．　　8　　, all drugs are really poison, 　　9　　 if you take too much, so you must always use them 　　10　　．

　　Why do some people take drugs like cocaine?For a little while they seem to make you feel better, or happier．But 　　11　　 their effects have 　　12　　, your body has to pay an extra 　　13　　 to get back to normal．That makes you want to get 　　14　　 of the drug．

　　Drugs like cocaine have their special effects because they act as 　　15　　 for your nervous system．They cut off some of your nerve pathways and take away some of your senses and your 　　16　　．They make you want always more．And just a little too much can even 　　17　　 nerves to your heart and stop its beating

　　Many of us worry about the 　　18　　 around us and what pollution does to us．How about your internal environment and what goes on 　　19　　 you?You control that all by yourself in what you put into your 　　20　　．Most drugs are pollutants．You would not want pollutants in the air and water around you．Why would you want pollutants in your body?

(1)


[　　]
A．	make
B．	cause
C．	help
D．	let

(2)


[　　]
A．	funny
B．	different
C．	simple
D．	true

(3)


[　　]
A．	just
B．	really
C．	especially
D．	sometimes

(4)


[　　]
A．	as if
B．	even if
C．	where
D．	so that

(5)


[　　]
A．	powerful
B．	helpful
C．	painful
D．	helpless

(6)


[　　]
A．	high
B．	tall
C．	much
D．	hot

(7)


[　　]
A．	when
B．	until
C．	as
D．	before

(8)


[　　]
A．	besides
B．	thus
C．	however
D．	naturally

(9)


[　　]
A．	at most
B．	at least
C．	at times
D．	at first

(10)


[　　]
A．	carefully
B．	easily
C．	carelessly
D．	a lot

(11)


[　　]
A．	where
B．	before
C．	after
D．	until

(12)


[　　]
A．	worked
B．	worn
C．	appeared
D．	lost

(13)


[　　]
A．	number
B．	quantity
C．	amount
D．	price

(14)


[　　]
A．	Some more
B．	nothing
C．	a little
D．	a few

(15)


[　　]
A．	guards
B．	medicine
C．	chemicals
D．	poisons

(16)


[　　]
A．	worries
B．	happiness
C．	freedom
D．	pride

(17)


[　　]
A．	lead
B．	block
C．	offer
D．	stick

(18)


[　　]
A．	places
B．	nature
C．	people
D．	environment

(19)


[　　]
A．	inside
B．	around
C．	outside
D．	next

(20)


[　　]
A．	heart
B．	head
C．	body
D．	mind

What is in the drug that makes you sick or dead? For example, cocaine is harmful, but what makes it harmful?

I can’t tell you all about drugs, but I can 　1 you think about them in this 　2　 way. Your body is a very complicated（复杂的） machine, 3　 a lot of chemical machinery, all of which is finally turned 　4　 it all works together . Special chemicals, which we call drugs, can affect it in many different ways.

Some drugs are 　5　 when your body has a problem, as with disease-causing bacteria. Then someone may give you aspirin to keep your temperature from going too 6　 or some penicillin（青霉素） 7 it stops the growth of some kinds of bacteria. 8　 , all drugs are really poison, 9 if you take too much ,so you must always use them 　10 .

Why do some people take drugs like cocaine? For a little while they seem to make you feel better, or happier .But 11 their effects have 　12 ,your body has to pay an extra 13　 to get back to normal. That makes you want to get 　14　 of the drug.

Drugs like cocaine have their special effects because they act as 　15　 for your nervous system. They cut off some of your nerve pathways and take away some of your senses and your 　16 . They make you want always more. And just a little too much can even 　17　 nerves to your heart and stop its beating.

Many of us worry about the 　18 around us and what pollution does to us .How about your internal（内在的） environment, and what goes on 　19　 you ? You control that all by yourself in what you put into your 　20 . Most drugs are pollutants. You would not want pollutants in the air and water around you. Why would you want pollutants in your body?

1．A．make　　　　 B．cause　　　 C．help　　　　 D．let

2．A．funny　　　　 B．different　 C．simple　　　 D．true

3．A．just　　　　 B．really　　　 C．especially　 D．sometimes

4．A．as if　　　　 B．even if　　 C．where　　　 D．so that

5．A．powerful　　 B．helpful　　 C．painful　　 D．helpless

6．A．high　　　　 B．tall　　　　 C．much　　　　 D．hot

7．A．when　　　　 B．until　　　 C．as　　　　　 D．before

8．A．Besides　　　 B．Thus　　　　 C．However　　 D．Naturally

9．A．at most　　　 B．at least　　 C．at times　　 D．at first

10．A．carefully　 B．easily　　　 C．carelessly　 D．a lot

11．A．where　　　 B．before　　　 C．after　　　　　　　　　 D．until

12．A．worked　　　 B．worn　　　　 C．appeared　　 D．lost

13．A．number　　　 B．quantity　　 C．amount　　　　　　　　 D．price

14．A．some more　 B．nothing　　 C．a little　　 D．a few

15．A．guards　　　 B．medicine　　 C．chemicals　 D．poisons

16．A．worries　　 B．happiness　 C．freedom　　 D．pride

17．A．lead　　　　 B．block　　　 C．offer　　　 D．stick

18．A．places　　　 B．nature　　　 C．people 　　 D．environment

19．A．inside　　　 B．around　　　 C．outside　　 D．next to

20．A．heart 　　　 B．head　　　　 C．body　　　　 D．mind

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