题目内容

For years scientists have been worried about the effects of air pollution on the earth’s natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse.

Indoor air pollution can cause a person to feel tired, to suffer eye pain, headache and other problems. Some pollutants(污染物)can cause breathing disorders, diseases of blood and even cancer. Most scientists agree that every modern house has some kind of indoor pollution.

People have paid more attention to the problem now. It is true that when builders began making houses and offices they did not waste energy. To do this they build buildings that limited the flow of air between inside and outside. They also began using man-made building materials. These materials are now known to let out harmful gases.

As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for building—green plants. Scientists do not really know how plants control air pollution. They believe that a plant’s leaves absorb(吸收)or take in the pollutants. In exchange the plant lets out oxygen through its leaves and tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square meters of space. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants. Having green plants inside your house can make it a prettier and healthier place.

1.Generally speaking, indoor air pollution may be more harmful than the air outside because .

A.indoor air pollution can often make people seriously ill

B.man-made building materials give off dangerous gases

C.there may be more harmful gases outside the buildings

D.the air indoors is polluted, which is very harmful

2.Some kind of indoor pollution can be found in .

A.every modern house B.every old house

C.all kinds of houses D.all kinds of offices

3.The indoor air pollution is caused by .

A.the limit of the flow of air between inside and outside

B.the building way that the builders want to save energy

C.the building things that are made of man-made materials

D.the man-made building materials and the limit of air-flow

4.The reason why we should use different kinds of plants to clean the air is that

A.plants can let out all kinds of pollutants indoors

B.plants may take in more oxygen (氧气)which people need

C.plants can absorb all kinds of harmful indoor chemicals

D.plants can make our houses prettier and more healthy

练习册系列答案
相关题目

In my opinion, classical music is a bit like mushrooms! You don’t see the link? Let me explain. When I was younger, I didn’t like mushrooms. They had a horrible texture(质地)and no taste at all, and I used to pick them out of every dish in which my mum tired to hide them. But gradually, as I got older, my view changed. I started to enjoy mushrooms-flavoured things like soups and sauces, and eventually I found I could eat mushrooms without grimacing(痛苦的表情). And now I even quite enjoy them! So my mum’s prediction that I would “grow into them” was proved quite correct.

Similarly, I always thought of classical music as this boring genre(类型)that only boring grown-ups liked. Whenever my parents played it in the car, I would count down the minutes until we could change it to my preferred genre: pop. But while at university, I found that calming orchestral music was just the thing for library revision playlists---it had no lyrics to stop me concentrating on my study, and the pieces tended to be very long; perfect for long work sessions!

Recently, my developing relationship with classical music reached a new level when I voluntarily chose to go to a ballet. Admittedly, it was the dancing that originally attracted me, but once there I thoroughly enjoyed the music too. It was The Nutcracker, and I was surprised by just how much of music I recognized! The Dance of the Sugar Plum Fairy, The Russian Dance, The Waltz of the Flowers—they all sounded familiar. I didn’t know how I knew them, I just knew that I did! And I loved them. My parents would be proud.

1.Why did the author first hate eating mushrooms?

A. The author’s mother always cooked them

B. The mushrooms had terrible look and no taste

C. Some mushrooms had bad effects on health

D. Some mushrooms tasted terrible

2.How does the writer connect classical music with mushrooms?

A. By comparison B. By the order of time

C. By telling facts D. By imagination

3.What did the author’s parents think of classical music?

A. Uninterested B. Favorite

C. Curious D. Bored

4.What’s the best title of the passage?

A. The Art and Life

B. The Change of Hobbies

C. Classical Music and Mushrooms!

D. Music or Mushrooms?

阅读下面短文,从短文后所给各题的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

A wise teacher let her class play a game. The teacher told each child to bring a bag containing a few ______. Each potato will be given a name of a person that the child _____hates, so the number of potatoes that a child will put into his / her ______ will depend on the ______ of people the child hates.

Some children had two potatoes; some had three and others had_____ up to five potatoes. The teacher then told the children to carry the bag ____ they go for a week.

___ the days went by, the children started to _____ ,because the rotten(腐烂的) potatoes ____ an unpleasant smell. And the students with five potatoes also had to carry _________ bags.

______ a week, the teacher asked, "How did you______?" The children started complaining about the trouble they had to ______, when they had to carry the heavy and _______ potatoes everywhere they went.

Then the teacher said, "This is the _______ when you carry your hate for somebody inside your______. The smell of hate will _______ your heart and you will carry it with you wherever you go. If you cannot ______ the smell of rotten potatoes for just one week, can you _______ what it is like to have the smell of hate in your heart for a ______?"

1.A. games B. books C. potatoes D. persons

2.A. chooses B. loves C. hates D. forgives

3.A. bag B. box C. basket D. barrel

4.A. kind B. number C. weight D. size

5.A. ever B. even C. already D. hardly

6.A. whatever B. whenever C. however D. wherever

7.A. As B. Although C. When D. After

8.A. argue B. disagree C. stop D. complain

9.A. gave in B. gave up C. gave off D. gave away

10.A. larger B. heavier C. more D. fewer

11.A. Until B. Before C. After D. Toward

12.A. play B. learn C. feel D. realize

13.A. go up B. go through C. go on D. go with

14.A. fresh B. delicious C. lovely D. smelly

15.A. situation B. chance C. example D. way

16.A. study B. work C. life D. heart

17.A. pollute B. damage C. kill D. take

18.A. continue B. last C. bear D. love

19.A. remember B. imagine C. recognize D. notice

20.A. week B. moment C. while D. lifetime

Do you ever watch old movies? Maybe you will see one with Carole Lombard. She was a famous ________ in the 1930s. She died when she was only 34. In her _________life she made 70 movies!

Lombard’s real name was Jane Alice Peters. In 1921, she was playing baseball in the _________near her home. A movie director _________ her and decided to put her in a movie. She was only 13 at the time. The movie was one of the last silent movies. She acted(表演) so well that she ________ the hearts of some people. At 16, she left school to act.

In 1925, she had an agreement with a _________ studio, 20th Century Fox. The studio gave her a mew________, and she acted in several films. Then, at age 18, she was in a bad car accident. The accident left scars(伤疤) on her face. The studio broke the agreement, but she did not ________. She continued to act.

It was Paramount Studio that made Lombard a _________. She made many movies for the studio. She also married two of their stars. Lombard was married to actor William Powell for only 23 months. ________ seven years later, she married the great love of her life, actor Clark Gable. It was a great Hollywood love story.

1.A. nurse B. doctor C. actress D. teacher

2.A. lazy B. short C. long D. humorous

3.A. street B. kitchen C. cinema D. classroom

4.A. forgot B. pushed C. hurt D. saw

5.A. won B. broke C. avoided D. treated

6.A. film B. dance C. music D. school

7.A. job B. name C. story D. partner

8.A. put away B. try out C. give up D. make sure

9.A. scientist B. writer C. driver D. star

10.A. As B. But C. Since D. Before

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网