宏量营养素
参考答案：指摄入量较大的碳水化合物、脂肪、蛋白质。
设f(x)在(-∞，+∞)上有定义，且对任意的x，y∈(-∞，+∞)有|f(x)-f(y)|≤|x-y|．证明。
用括号内所给单词的适当形式填空
小题1:December is the ________（twelve）month of a year.
小题2:Lily always helps her mother clean the house. She is very______（help）.
小题3:He sits between you and ______（I）.
小题4:It’s one of the most famous ______（beach）in the world.
小题5:The police finally found the ______（rob） names and addresses.
。