题目内容

The research group ____________ 15 members has made great achievements in recent years.


  1. A.
    is made up of
  2. B.
    makes up
  3. C.
    made up of
  4. D.
    making up of
C
试题分析:考察定语用法。本题的关键是分清句中结构,本句的谓语动词是has made great achievements in recent years.前面的形容词短语made up of 15 members是对名词The research group进行修饰限制。相当于which is made up of 15 members.句意:由15个成员组成的研究队伍,在最近几年里已经取得了巨大的成就。故C正确。
考点:考察定语用法
点评:本句中的短语be made up of…由…组成;可以使用形容词短语made up of 15 members修饰前面的名词,相当于定语从句。在具体的使用中要主语这两者的互换。
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  Sweet potatoes are fat-free,high in fiber and full of the vitamins that research suggests reduce your risk of life-shortening diseases.To stay healthy,we must eat more fruits and vegetables,and sweet potatoes are a great source of beta carotene(胡萝卜素)and other carotenoids.According to a study of the diets of almost 90,000 nurses,eating about one cup a day of fruils and vegetables rich in carotenoids(which the body turns into vitamin A)can cut your risk of stroke in halt and reduce your risk of heart disease by 22 percent.Other resear chsuggests beta carotene protects against breast,lung and stomach cancers.

  Beta carotene is the most famous member of the carotenoids family.In fact,a medium sized sweet potato contains nearly 12 mg of beta carotene(antiaging experts usually suggest 6 to 11 mg perday).Sweet potatoes are also a low-fat source of vitamin E.Research has linked high E diets with a lower risk of heart disease.This vitamin pill in an orange jacket also packs a vitamin C punch-it has more C than apricots(a kind of fruit).Research suggests that vitamin C protects against ailments ranging from cataracts(an eye disease)to cancer.In addition,A UCLA(University of California,Los Angels)study linked high vitamin C diets with a longer life.Recent studies have showed that antioxidant vitamins C,E and beta carotene fight a fierce battle against free radicals(自由基),which cause cell(细胞)damage and lead to various illnesses.Therefore,to keep fit,eat more sweet potatoes.

(1)

According to the text,there exists a lot of ________ in sweet potatoes.

[  ]

A.

fiber,beta carotene,other earotenoids,vitamin E and C

B.

beta carotene,other carotenoids,fiber,vitamin A and E

C.

vitamin A,beta carotene,fiber,vitamin E and C

D.

beta carotent,other carotenoids,vitamin A and E

(2)

This text as a whole suggests that eating sweet potatoes can help ________

[  ]

A.

cut your risk of stroke and heart disease

B.

protect against breast,lung and stomach cancers

C.

protect against ailments ranging from cataracts to cancer

D.

you stay healthy and reduce your risk of life shortening diseases

(3)

“This vitamin pill in an orange jacket”in the passage refers to ________

[  ]

A.

sweet potato

B.

vitamin C pill

C.

vitamin E pill

D.

beta carotene

(4)

The best title of this passage might be ________

[  ]

A.

The Vitamin Superstar

B.

On Sweet Potatoes

C.

Beta Carotene and Vitamins

D.

Diet and Disease

阅读理解:   

阅读下面短文,从所给四个选项中,选出最佳答案。

 Can trees talk? Yes——but not in words Scientists have reason to believe that trees do communicate (互通信息) with each other Not long ago, resear- chers learned some surprising things First a willow tree(柳树)attacked in the woods by caterpillars(毛毛虫)changed the chemistry of its leaves and made them taste so terrible that the caterpillars got tired of the leaves and stopped eating them Then even more astonishing, the tree sent out a special vapour — a signal causing its neighbours to change the chemistry of their own leaves and make them less tasty

   Communication, of course, doesn't need to be always in words We can talk to each other by smiling, raising our shoulders and moving our hands We know that birds and animals use a whole vocabulary of songs, sounds, and movements Bees dance their signals, flying in certain patterns that tell other bees where to find nectar(花蜜)for honey So why shouldn't trees have ways of sending messages?

1 When attacked, a willow tree will protect itself by________

[  ]

A changing its leaveschemistry

B changing its leavescolour

C talking to caterpillars

D sending a special vapour

2 From the passage we know that catrpillars________

[  ]

A like willow trees

B enjoy eating fallen leaves

C feed on willow tree leaves

D could communicate with willow trees

3 Caterpillars will stop eating willow tree leaves which________

[  ]

A have a chemical change and become tasteless

B have a pleasant taste

C are being attacked

D are communicating

4 According to the passage, how do willow trees communicate with each other?

[  ]

A They talk in words

B They send out a special vapour

C They wave their leaves

D They make special sounds

5 According to the passage, bees communicate with each other by______

[  ]

A talking

B making unusual sounds

C singing songs

D. fly in certain patterns

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