【題目】 The energy in food is mainly in the form of three kinds of chemical materials --- carbohydrate (碳水化合物), protein (蛋白質(zhì)) 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
【答案】
【1】C
【2】B
【解析】
這是一篇說明文,主要講述了人們?nèi)粘;顒?dòng)中所需要的能量以及一些食物的具體能量占比。
【1】細(xì)節(jié)理解題。根據(jù)表格內(nèi)容Woman 1,800和Farmer 3,600可知,農(nóng)民每天需要3600卡路里的能量,婦女每天需要1800卡路里的能量,所以婦女每天需要的卡路里是農(nóng)民的一半。故選C。
【2】細(xì)節(jié)理解題。根據(jù)圖中所示可知,牛奶中碳水化合物占比40%;米飯中碳水化合物占比85%;花生中碳水化合物占比10%;根據(jù)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;米飯中的碳水化合物占比最高,可以提供最多的能量。故選B。
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