Boil drinking water for at least five minutes, to kill the germs, then let it cool in a clean container. Keep it covered.

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问题 Boil drinking water for at least five minutes, to kill the germs, then let it cool in a clean container. Keep it covered.

选项 A、insects
B、bugs
C、bacteria
D、pests

答案C

解析 germ“微生物、细菌”;bacterium“细菌”;insect“昆虫”;bug“虫子,臭虫”;pest“害虫”。句意:饮用水至少要煮开5分钟,把细菌杀死,然后在容器中凉凉,盖好。
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