16．I'm sure you've asked this when traveling，"Can I drink the tap water？"It is easy to get confused about where it's safe to drink and where it's not，especially if you're planning a multi-destination trip．Some countries like India and Mexico are well known for unsafe tap water but where else is it a health risk？
If you want a quick reference for where on the Earth the water is safe，we've got you covered with this helpful graph．It was created by Just the Flight．All of the information about water safety is based on data from the CDC．The graph also shows pricing for bottled water and beer for each country as well!So if you can't drink the water you know what you're looking at for costs to stay hydrated．
Have plans to travel to a place where the tap water is deemed unsafe？Remember to skip ice in your drinks and avoid uncooked fruit and vegetables unless they've been peeled．Make sure to use bottled water when brushing your teeth as well．
Please know，not all of the countries listed on the graphic have dirty or polluted water．I know from personal experience，tap water may be safe at different elevations and in different areas within a country shown as unsafe on the graph．Ultimately，further research is required．Falling short of that，follow the advice on the graph to avoid an uncomfortable case of traveler's illness．
It's definitely better to be safe than sorry!
21．Which of the following is the best title？A
A．Where on the Earth Can You Drink Safe Tap Water？
B．How Can We Get Tap Water？
C．Drinking Tap Water is Good for Our Health
D．Tap Water is Always Safe to Drink
22．What can we learn from the graph？C
A．It only contains the information about water safety．
B．It also shows pricing for some kinds of wine．
C．It was based on the data from the CDC．
D．It is of great help when talking．
23．The passage is most likely to be found inC．
A．a tourist map
B．an academic essay
C．a tourist magazine
D．a short-story collection
24．What's the meaning of the underlined word？B
A．made B．considered C．drunk D．uncooked．
分析 本文为科教文，文章主要介绍哪些旅游地点的自来水是安全的．
解答 21---24 ACCB
21．答案A．主旨大意题．根据第一段Some countries like India and Mexico are well known for unsafe tap water but where else is it a health risk？可知，本文主要介绍哪些旅游地点的自来水是安全的．故选A．
22．答案C．细节理解题．根据第二段we've got you covered with this helpful graph．It was created by Just the Flight．All of the information about water safety is based on data from the CDC．The graph also shows pricing for bottled water and beer for each country as well!可知，这份图表的数据是基于CDC．故选C．
23．答案C．文章出处题．根据第二段If you want a quick reference for where on the Earth the water is safe，we've got you covered with this helpful graph可知，本文主要给游客介绍一份饮用水的统计表，告诉游客哪里的水是安全的．推测来自于旅游杂志．故选C．
24．答案B．词义猜测题．根据后文Remember to skip ice in your drinks and avoid uncooked fruit and vegetables unless they've been peeled．Make sure to use bottled water when brushing your teeth as well可知，这里提到的水是公认的不安全．deem意为"认为"，故选B．
点评 说明文主要包括事物说明文和事理说明文，说明文一般呈现出条理清晰、逻辑严谨的特点，说明文的语言要求准确、科学．了解了这些特点，我们还要知道阅读理解的题型一般包括：细节题、语义猜测题、主旨大意题、判断推理题等．关于细节题，用到的英语说明文阅读技巧就是仔细查找．这种题型的答案一般都可以在文中找到，当然，答案不可能与原文一模一样，但是它们表达的意思是一样的．只要在文中仔细查找，就能找到答案．
