[解析]
(1)F.联系上文题.根据前文As you plan for your trip,here are some tips on how to protect yourself.可知,当你计划你的旅行时,这里有一些如何保护自己的技巧.句意:这是必要的,避免在旅行中染上疾病.故选F.
(2)A.标题推断题.根据本段内容,尤其是下文If you can't avoid unhealthful water,make sure you bring along a tea or coffee﹣making pot that will boil water for you.可知,本段主要讲述了要注意饮用水的安全.句意:不要信任当地的水.故选A.
(3)G.文章衔接题.根据下文You should never walk barefoot in any area of a foreign country,including your hotel room.可知,你不应该赤脚走在外国的任何地方,包括你的酒店房间.故G句意:寄生虫可以进入你脚部的皮肤,去身体的不同部位.符合语境.故选G.
(4)B.联系下文题.根据下文They may have been washed in the same water,or wiped with the same rag used to clean work surfaces in kitchens.可知,他们可能已经在同一个水中洗过,或用以清洁厨房的工作台的抹布擦拭.故此处B句意:任何新鲜的水果可能会被污染.符合语境.故选B.
(5)D.联系上文题.根据前文If you are concerned about whether a restaurant is clean,order the food to go可知,如果您担心餐厅是否干净,请点餐带走.句意:盒子可能比桌子上的盘子或叉子更干净.故选D.