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精英家教網 > 初中英語 > 題目詳情
The human body is a living machine, and, like all machines, it needs “fuel” 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(卡). 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 picture shows. 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 of the energy, protein 4.0 Cal/gm, and fat 8.8 Cal/gm. Each food contains different amounts of these materials, as the round pictures show.
(P= protein      C= carbohydrate    F=fat)
小題1:How many calories are needed to raise the temperature of 5kg of water from 35℃ to 90℃?
A.55.B.175.C.325.D.275.
小題2:Which of the following contains the most amount of calories?
A.Milk.B.RiceC.Peanuts.D.Milk or peanuts.
小題3:Who needs the most amount of calories each day?
A.A woman.B.An office worker.C.A farmer.D.A boy aged 16.
小題4:Which of following is True?  
A.You need more calories for swimming than for mountain climbing.
B.A child aged 8 needs the same amount of calories every day as a man over 70 does.
C.A woman feeding baby needs over 4 times the amount of calories that a baby does.
D.Everyone needs the same amount of calories per day.
小題5:This passage 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

小題1:D
小題2:C
小題3:C
小題4:B
小題5:C

小題1:理解計算題,根據文中語句“A calorie is the amount of heat required to raise the temperature of 1 kg of water by 1℃.”理解可知。5kg of water from 35℃ to 90℃need 5*(90-35)=275calories
小題2:生活常識題,根據生活常識可知。
小題3:細節理解題,根據文中語句“the number of calories you use at any one moment normally depends on the activity you are in.”理解可知。
小題4:理解推斷題,根據文中語句理解推斷可知。
小題5:理解歸納題,根據文中語句理解歸納可知。
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