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第三部分:閱讀理解(共20小題;每小題2分,滿分40分)

閱讀下列短文,從每題所給的A、B、C、D四個選項中,選出最佳選項。[來源:學&科&網]

The human body is a living machine , and , like all machines , it needs “fuel” (燃料) to supply it with energy . This is provided by the food we eat . But how much do we need to stay healthy ?

The energy value of food is usually measured in calories . A calorie is the amount of heat required to raise the temperature of 1 kg of water by 1℃. The number of calories people need per day is different , as the pictures show . Also , the number of calories you use at any one moment normally depends on the activity you are in . For example , you need more calories for standing than for sitting , more for running than for walking , and so on .

The energy in food is in the form of three kinds of chemical materials-carbohydrate (碳水化合物), protein(蛋白質)and fat . Carbohydrate provides 3.8 Cal/gm , protein4.0 Cal/gm , and fat 8.8 Cal/gm . Each food contains different amount of these materials , as the round pictures show .

 

 

 

 

 

 

 

 

 

1.The amount of calories supplied by equal amounts of milk , rice , and peanuts is the largest in the case of          .

         A.milk B.rice   C.peanuts    D.rice or peanuts

2.Choose one statement from among A-D that agrees with the passage and the pictures above .

         A.You need more calories for swimming than for mountain climbing .

         B.Food contains energy in the form of carbohydres , proteins and fuel .

         C.Different people need different amounts of energy depending on their age , sex and the activities they are in .

            D.3 grams of milk provides 16.6 calories because carbohydrate provides 3.8 Cal/gm , protein 4.0 Cal/gm and fat 8.8 Cal/gm .

3.This article mainly tells us ________________.

         A.all the energy is in food

         B.the human body needs energy

         C.the number of calories depends on your activity

         D.we must only eat peanuts to get calories

 

【答案】

 

 C

 C

 B

【解析】

 

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A

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