( ) No one knows the secret, ? A. does he B. doesn’t he C. do you D. will you 查看更多

 

题目列表(包括答案和解析)

  No one knows why we sleep, but it’s certain that we need to.People who are prevented from sleeping begin to suffer obvious effects after a few days-they think less clearly, and they fall asleep during the working hours.

  There are no rules about sleep.Generally speaking, grown-ups sleep about 7 and a half hours each night and probably more than 60 percent get between seven and eight hours.But perhaps eight percent are quite happy with 5 hours or less, and four percent or so find that they want ten hours or more.If you feel all right, you’re probably getting enough sleep.The important thing is not to worry how much other people get-their needs may be different.Exercise doesn’t seem to increase the need for sleep-office workers, for example, sleep for about as long as people doing physically active work.

  Children sleep more than grown-ups-perhaps 14 to 18 hours soon after birth, going down to grown-up levels by early teenagers.Sleep patterns also tend to be different in the old people, who may sleep less at night than they did when younger, find sleep getting more broken, and often make it a rule to sleep during the daytime.

(1)

Some people can’t think clearly because ________.

[  ]

A.

they have bad memory

B.

they feel sleepy during the working hours

C.

they don’t have enough sleep

D.

they are certain to be kept from going to bed

(2)

Whether you have got enough sleep is judged by ________.

[  ]

A.

how many hours you have slept

B.

how many hours you need to sleep

C.

if you do exercise and physical work

D.

if you feel fresh and energetic

(3)

According to the passage, a boy of 14 years old sleeps ________.

[  ]

A.

as long hours as a grown-up

B.

much longer hours than a grown-up

C.

for 14 hours each night

D.

for less than 8 hours each night

(4)

Which of the following is true?

[  ]

A.

All grown-ups must have at least eight-hour sleep.

B.

Most of grown-ups sleep for seven or eight hours.

C.

Quite a few people need only 5 hours or less for them to sleep.

D.

No grown-ups sleep more than ten hours

(5)

Which is not mentioned in the passage?

[  ]

A.

why people should sleep

B.

the length of sleep

C.

how to sleep well

D.

Children’s sleep

查看答案和解析>>

阅读理解

  Is there a strange something high up in the world's tallest mountains? If so, is it a big bear? Is it a monkey? Or is it a kind of man?

  No one knows. This mystery (谜) has puzzled (困惑) the world for years.

  In 1887, a mountain climber found large footprints (脚印) in the snow. They looked like the footprints of a very large man. But men don't walk without shoes in the snow!

  In 1906, another climber saw more than footprints. Far off, he saw a very large animal standing on two legs. As he watched, it ran very quickly.

  Fifteen years later, newspapers, had new stories about the“something”. A mountain climber said he had seen the“Snow man” walk slowly across the snow, far below him. He said it looked like a very large man.

  From then on, more and more people had stories to tell. But until 1951 did a mountain climber bring back pictures of large footprints. The pictures showed clearly that the Snowman walked on two legs. So it was not a bear or a monkey. Could it be an ape(猿) man? The mystery grew! And the mystery keeps growing. Someday we may find out just what it is that makes the large foot- prints.

(1) The passage is about

[  ]

A. some mountain climbers

B. some strange animals

C. some large footprints

D. the mystery of the Snowman

(2) Why were people interested in the footprints?

[  ]

A. They were footprints of a large bear.

B. They looked like the footprints of a large man.

C. They were found in the snow.

D. They were found in the world's tallest mountains.

(3) The pictures of large footprints were taken by a mountain climber in ________ .

[  ]

A. 1887

B. 1906

C. 1921

D. 1951

(4) Why did the mystery grow when a mountain climber brought back pictures of large footprints?

[  ]

A. They were footprints of an ape man.

B. They were footprints of a snow man.

C. The pictures showed clearly how the Snowman walked.

D. The pictures showed clearly how an ape man walked on two legs.

(5) Since a mountain climber first found the large footprints in the snow, the mystery of the Snowman has puzzled the world for ________ years.

[  ]

A. one hundred and seventeen

B. ninety-five

C. eighty

D. fifty

查看答案和解析>>

阅读理解

  Long, long ago there were only a few thousand people in the world.These people move from place to place over the land , hunting animals for food.

  No one knows how or when these people learned about growing food.But when they did , their lives changed.They did not have to look for food any more.They could stay in one place and grow it.

People began to live near one another.And so the first village grew.Many people came to work in the villages.These villages grew very big.When machines appeared(出现), life in the villages changed again.Factories were built.More and more people lived near the factories.The cities grew very big.

  Today some people are moving back to small towns.Can you tell why?

(1)

The best title of the text should be “________“.

[  ]

A.

Cities or villages

B.

Back to Towns

C.

How Cities Grew

D.

People and Animals

(2)

The underlined word “they” in the second paragraph refers to________

[  ]

A.

villages

B.

animals

C.

cities

D.

people

(3)

When factories were built ,________

[  ]

A.

more people lived near the factories

B.

people began to live in the factories

C.

many people began to work in villages

D.

many machines appeared in big factories

(4)

We can learn from the text that ________

[  ]

A.

people like to work only in big cities

B.

some people don’t like to live in the cities

C.

there will be no small towns in the future

D.

it is better to live in cities than in villages

(5)

In what order did people do the following things?

a.Worked in villages.b.Lived near the factories.c.Learned to grow food.d.Built factories.e.Began to live near each other.

[  ]

A.

d-b-a-e-c

B.

e-a-c-d-b

C.

c-e-a-d-b

D.

a-c-d-e-b

查看答案和解析>>

阅读理解。

  Do you live in a city?Do you know how cities began?Long long ago, the world had only a few thousand people.These people moved from place to place.They moved over the land, hunting animals for food.

  No one knows how or when those people learned about growing food.But when they did, their lives changed.They did not have to look for food any more.They could stay in one place and grow it.

  People began to live near one another.And so the first villages grew.Many people came to work in the villages.These villages grew bigger and bigger.

  When people had machines, life in the village changed again.Factories were built.More and more people lived near the factories.So the villages grew into cities.Some of them grew very big.

  Today, some people are moving back to small towns.Can you tell why?

(1)

From the passage we know that people lived on(以……为食)________ before cities began.

[  ]

A.

animals

B.

grass

C.

crops

D.

fruits

(2)

Why could men stay in one place?

[  ]

A.

Because they knew how to hunt animals.

B.

Because they built houses.

C.

Because they began growing crops.

D.

Because they had machines.

(3)

What happened when factories were built?

[  ]

A.

People began to live in the factories.

B.

More and more people lived near the factories.

C.

There were many machines in the factories.

D.

Machines were very useful.

(4)

Which of the following is true?

[  ]

A.

People had to move often before they began growing crops.

B.

People didn’t like to live in big cities.

C.

The villages were bigger than the cities.

D.

All the people like to move back to small towns today.

(5)

The main idea of the story is that ________.

[  ]

A.

how people grew crops

B.

how people built houses

C.

how villages grew

D.

how cities began to grow

查看答案和解析>>

阅读理解

  When you grow up, what will things be like?

  No one knows.

  But it is fun to guess.

  Let's make this a story about you in the year 2014.How old will you be then?Ask your teacher or work it out.

  Our story will be about one only.Let's make it the birthday of your little boy.His name is Alan.

  Alan wakes you at seven o'clock.“Happy birthday!”you say.“You'll find your presents in the living room.”

  You don't have to hurry.Why?

  Your job starts late in the morning.Machines do most of your work.You don't need to work many hours.

  While Alan opens his presents, you turn on your colour TV.You watch and hear the morning news.“It's time to get dressed, Alan!”you call, at last.“Come to see the nice new clothes I have for you.”

  Guess what the clothes are made of.Paper? Glass? Or something we don't even know about today?

  Alan's birthday breakfast is no time to fix.Why? The food may be all ready to eat.You may eat it like candy.

  At last you start for work.But you don't go by car.You step onto a moving sidewalk.It moves you along to a train station.There, you take a train.How will it run? On one rail, high over the street? Or will it ride on air?

  Three o'clock comes.Your work is done for the day.

  “I'll call home,”you say.

  Alan answers the picture phone.

  You and he can hear and see each other.“What shall we do for your birthday?”you ask.“Shall we put on our rocket belts and take a short trip? Or shall we go for a ride in a flying boat?”

  Alan could say,“I want to ride in a rocket ship! Let's fly to the moon!”What do you think of the idea? Give your story a happy ending!

(1)

What will your life be when you grow up?

[  ]

A.

Life will be harder then.

B.

Everything will be more convenient(方便的)then.

C.

You have to spend more time on work and study.

D.

You needn't to work.

(2)

In the year 2014, clothes may be made of ________.

[  ]

A.

something very different

B.

only silk

C.

cotton only

D.

anything

(3)

In the year 2014, you ________.

[  ]

A.

must prepare your food yourself

B.

may not have to cook your meals

C.

needn't go to stores for food

D.

can have anything for meal

(4)

It will be ________ for you to take a ride in a rocket ship.

[  ]

A.

impossible

B.

necessary

C.

possible

D.

a must

(5)

You step onto a moving sidewalk.The word“sidewalk”means ________.

[  ]

A.

not the main road for cars

B.

small road for people to run on

C.

small railway

D.

path at the side of a street for persons on foot

查看答案和解析>>


同步练习册答案