摘要: A. and B. but C. so D. yet [解析]上下文为因果关系.故用so. [答案]C

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阅读下列短文,从每题所给的四个选项中选出最佳答案。

  The vitamins(维生素)are named by letters of the alphabet(字母表).Vitamin A is needed by the eyes.There is Vitamin A in milk, butter, and green vegetables.It can be kept by the body.

  Vitamin B cannot be kept.It must be supplied all the time by some of the food we eat.

  Vitamin C is very important to the body.Without it men’s teeth become loose(松的)and their arms and legs get weak.Lemons(柠檬), oranges and tomatoes have Vitamin C in them.

  Vitamin D is the sun vitamin.We get it in milk and eggs and from sunlight on our skin(皮).There are other Vitamins, but these A, B, C and D, are the most important.

(1)

There are many kinds of vitamins, the most important of which are ________.

[  ]

A.

Vitamin A

B.

Vitamin B and C

C.

Vitamin D and A

D.

both B and C

(2)

There are both Vitamins A and D in ________.

[  ]

A.

green vegetable

B.

sunlight

C.

butter and eggs

D.

milk

(3)

If somebody is near-eye sighted probably he needs ________.

[  ]

A.

Vitamin A

B.

Vitamins A and C

C.

Vitamin D

D.

Vitamin B

(4)

We can get Vitamin D when ________.

[  ]

A.

we have bread and butter for our breakfast

B.

we are eating fruits

C.

we are working in the field in the sun

D.

we are having eggs

(5)

Which is true according to the article?

[  ]

A.

The vitamins are names of the alphabet.

B.

We can keep both Vitamins A and B.

C.

Milk is very important to human beings(人类).

D.

A person who lacks(缺乏)Vitamin should eat more vegetables.

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