[解析]
(1)细节理解题。根据Alyssa Greene部分Though she exercised,she didn't pay much attention to her diet and her overall health until she realized a change had to be made.Over the next 2.5 years,she self﹣educated about nutrition and learnt what and how much to eat to get the results she wanted.(尽管她锻炼,但她并没有太注意自己的饮食和整体健康,直到她意识到她必须做出改变。在接下来的两年半里,她自学了营养知识,学会了吃什么和吃多少才能达到她想要的效果)可知,格林是通过改变饮食习惯减肥的。故选B。
(2)细节理解题。根据Tanisha Commodore部分Over eight months,Commodore lost 80 pounds. "You didn't put it on overnight,so don't expect to lose it overnight," she notes.(在八个多月的时间里,Commodore减掉了80磅。她指出:"你不是在一夜之间增加体重,所以不要指望一夜之间就会减掉它。")可知,Commodore表示人们不要指望一夜之间减肥,即建议人们要有耐心。故选C。
(3)细节理解题。根据Alyssa Greene部分Today,Greene has lost 50 pounds and relies on self﹣discipline as her key motivator. "I do what I want for me,no one else," she says. "For people who have a hard time making a lifestyle change because of family or friends or a significant other,it really boils down to discipline."(如今,格林已经瘦了50磅,依靠自律作为她的主要动力。"我为自己做我想做的事,而不是别人,"她说。"对于那些因为家人、朋友或重要的另一半而难以改变生活方式的人来说,这真的可以归结为自制力。")以及 Denita Elizabeth部分Remember:you need to develop discipline and commitment for the moments when you don't feel like it.(记住:当你不喜欢它的时候,你需要培养自制力和承诺)可知,格林和伊丽莎白的共同点是她们都拥有自制力。故选B。