阅读理解

  To extinguish(熄)different kinds of fires, several types of fire extinguishers(灭火器)have been invented.They must be ready for immediate use when fire breaks out.Most portable(手提式的)kinds operate for less than a minute, so they are useful only on small fires.The law requires ships, trains, buses and planes to carry extinguishers.

  Since fuel, oxygen(氧气)and heat must be present for fire to exist, one or more of these things must be removed or reduced to extinguish a fire.If the heat is reduced by cooling the material below a certain temperature, the fire goes out.Water is the best cooling material because it is low in cost and easy to get.

  Another method of extinguishing fire is by cutting off the oxygen.This is usually done by covering the fire with sand, steam or some other things.A blanket(毯子)may be used to cover a small fire.

  A third method is called separation, which includes removing the fuel, or material easy to burn, from a fire, so that it can find no fuel.

  The method that is used to put out a fire depends on the type of fire.Fires have been divided into three classes.Fires in wood, paper, cloth and the like are called C1ass A fires.These materials usually help keep the fire on.Such fires can be stopped most easily by cooling with water.

(1)

If a fire breaks out on a bus, which of the following should be ready there for you to use?

[  ]

A.

Sand

B.

Water

C.

A blanket

D.

An extinguisher

(2)

To cover a small piece of burning wood with a basin(盆)in order to stop the fire is aft example of ________

[  ]

A.

separating the fire

B.

reducing the heat

C.

removing the fuel

D.

cutting off the oxygen

(3)

In choosing how to put out a fire, we should first be clear about ________

[  ]

A.

when it breaks out

B.

how it comes about

C.

what kind it is

D.

where it takes place

(4)

What would the writer probably discuss in the next paragraph?

[  ]

A.

Another class of fire.

B.

Another type of extinguishers.

C.

How fires break out.

D.

How fires can be prevented.

With golden sunshine and gentle breeze,autumn is the most beautiful season in the year.This is a great time to go outside and have  1  .Go to a valley to see red maple trees,go and pick fruit in an orchard or find an open field to fly your kite in.

  2  ,for many high school students,these great activities may be just a/an  3.With plenty of work to do, spend all their hours indoors.  4   for a high mark in their exam.

     5    ,study is one of the most important things for teenagers.But life is   6    much more than that.

    Sometimes we may be so   7  with studying that we forget how to make  8  wonderful.In doing so.we lose the   9  purpose of life--to be a valuable and happy person.

    To   10   just how great it is to he alive,we have to   11   our books and pens and look around us.Guys,take some exercise to   12  your health,talk with your parents and friends for understanding and walk around outside your house to refresh your body and mind.

    Going out and enjoying the beautiful countryside often helps our creativity in our work.Chinese craftsman Lu Ban created a saw to help woodworkers.But   13  he hadn't walked  14  ,he would not have been  15   by a kind of toothed grass.We could also suppose if Newton hadn't  16  under that apple tree.then he wouldn't have been hit by an apple,and his great theories would not have come out.

    Going out is not only a/an  17  from hard work,but a chance to  18  to life experience.

    So come on,give your  19   a good rest.Step out of the books and get your bag ready for aft autumn outing.We are sure you will get much more than  20  from the exciting journey.

1.A.fun                       B.sunlight                C.picnic                    D.trip

2.A.Moreover              B.Eventually            C.However                D.Therefore

3.A.application             B.dream                  C.chance                   D.effort

4.A.asking                   B.searching             C.calling                    D.struggling

5.A.As a consequence     B.In turn                 C.In fact                   D.Of course

6.A.definitely               B.generally              C.magically                D.strangely

7.A.covered                 B.connected            C.occupied                D.buried

8.A.autumn                  B.heart                    C.time                       D.1ife

9.A.practical                B.imaginative           C.real                        D.perfect

10.A.possess               B.enjoy                   C.exploit                   D.discover

11.A.1ake up                B.burn out               C.put down                      D.sell out

12.A.raise                    B.increase               C.improve                 D.recover

13.A.whether               B.if                         C.since                     D.unless

14.A,inside                  B.around                 C.outside                 D.forward

15.A.touched               B.invited                 C.inspired                D.suggested

16.A.walked                B.rested                  C.passed                 D.climbed

17.A.break                   B.absence               C.movement             D.vacation

18.A.refer                    B.turn                      C.stick                    D.add

19.A.brain                   B.heart                    C.body                      D.feeling

20.A.awareness            B.evidence              C.courage               D.knowledge

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