保护环境，减少雾霾的做法正确的是（　　）

下列对人体相关的结构和功能的描述中，正确的是（   ）

根据短文内容判断下列句子正误。

                                                                                                                 B

    One day, a little boy met an old millionaire and said. “I think I'm much richer than you.” The old man was greatly surprised and asked, “Why, my child?"

    “Do you know, time is money?” The boy asked.

    “Of course I do, but does it mean you are richer than me?”

     "Why not?" said the boy, “Now you see, I'm only ten years old and you are already seventy. If we both can live to 100, I still have 90 years to 90, while you have only 30 years. Time is money. Don't you agree I'm much richer than you?”

下图表示食物通过人体消化道时，糖类、蛋白质、脂肪被化学性消化的程度，字母表示组成消化道顺序的各个器官，据图回答：