[解析]
(1)语境衔接题。根据上文You don't have to completely avoid foods you enjoy. (你不必完全避免你喜欢的食物。)以及下文That usually only leads to cheating or giving up on your new eating plan.A better approach is to make a few small changes at a time.(这通常只会导致作弊或放弃你的新饮食计划。一个更好的方法是一次做一些小的更改。)可知,改变饮食习惯不必一次完成。没有必要一下子改变一切,否则就会导致你有可能会放弃你的新饮食计划。C项"And you don't have to change everything all at once你不需要一下子改变所有的东西。"符合语境。故选C。
(2)联系上文题。根据上文Prepare more of your own meals.(多准备一些你自己的饭菜。)可知,需要为自己多准备一些饭菜。空处进一步解释这样做的原因。G项中的"Cooking more meals"和上文"Prepare more of your own meals."相呼应。G项"Cooking more meals at home can help you take charge of what you're eating在家多做饭可以帮助你控制自己的饮食。"符合语境。故选G。
(3)联系下文题。根据下文When cutting back on unhealthy foods in your diet,it's important to replace them with healthy alternatives. (当你减少饮食中不健康的食物时,用健康的替代品代替它们是很重要的。)可知,本段所给建议为要用健康的食物替代饮食中不健康的食物。A项"Make the right changes做出正确的更改。"符合语境。故选A。
(4)语境衔接题。根据上文Focus on how you feel after eating.This will help develop healthy new habits and tastes. (关注你吃完饭后的感觉,这将有助于培养健康的新习惯和新口味。)可知,要关注吃东西后的感觉。空处和下文"The more junk food you eat,the more likely you are to feel uncomfortable,boring or tired out.(你吃的垃圾食品越多,你就越可能感到不舒服、无聊或疲惫。)可知,要关注吃东西后的感觉。并描述吃东西后的感觉。E项"The healthier the foods you eat,the better you'll feel after a meal你吃的食物越健康,饭后感觉就越好。"符合语境。故选E。
(5)联系上文题。根据上文Water helps flush our systems of waste products and poison,yet many of us go through life dehydrated (脱水的)—causing tiredness,low energy,and headaches.It's common to mistake thirst for hunger. (水有助于冲洗我们的废物和毒素系统,但我们中的许多人一生都处于脱水状态,导致疲劳、低能量和头痛。把口渴误认为饥饿是很常见的。)可知,多喝水有好处,如果喝水不足会导致脱水现象。F项中的Thus和前文构成因果关系,"drinking enough water"和本段的主旨句"Drink plenty of water. "相呼应,F项"So drinking enough water will also help you make healthier food choices所以喝足够的水也有助于你选择更健康的食物"。符合语境。故选F。