Question

【题目】 The energy in food is mainly in the form of three kinds of chemical materials --- carbohydrate (碳水化合物), protein (蛋白质) and fat (脂肪). Carbohydrate provides 3.8 cal/gm (calories per gram) of energy, protein provides 4.0 cal/gm and fat provides 8.8 cal/gm. Each kind of food contains different amounts of these materials, as the round charts show below.

CALORIES NEEDED PER DAY
Baby 750	Office worker 1,500
Child aged 8 2,100	Woman feeding baby 2,700
Man 1,980	Boy aged 16 3,700
Woman 1,800	Farmer 3,600

【1】Who only needs half of the farmer’s calories in the chart?

A.The woman feeding baby

B.The office worker

C.The woman

【2】A 17-year-boy can increase the most calories if he has ________.

A.milkB.riceC.peanuts

Answer 1

【答案】

【1】C

【2】B

【解析】

这是一篇说明文，主要讲述了人们日常活动中所需要的能量以及一些食物的具体能量占比。

【1】细节理解题。根据表格内容Woman 1,800和Farmer 3,600可知，农民每天需要3600卡路里的能量，妇女每天需要1800卡路里的能量，所以妇女每天需要的卡路里是农民的一半。故选C。

【2】细节理解题。根据图中所示可知，牛奶中碳水化合物占比40%；米饭中碳水化合物占比85%；花生中碳水化合物占比10%；根据Carbohydrate provides 3.8 cal/gm (calories per gram) of energy.可知，碳水化合物可以提供卡路里，所以碳水化合物占比越高，提供的能量也就越多；米饭中的碳水化合物占比最高，可以提供最多的能量。故选B。