2. 医学
  3. An enormous number of people in the world’ s poorest countries do not have clean water or adequate sanitation______.

An enormous number of people in the world’ s poorest countries do not have clean water or adequate sanitation______.

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问题 An enormous number of people in the world’ s poorest countries do not have clean water or adequate sanitation______.
选项 A、capacities
B、facilities
C、authorities
D、warranties
答案B
解析 句意：世界最贫穷地区的很多人享用不到洁净的水和足够的卫生设施。facility设备，工具。capacity容量；能力。authority权威；权威人士。warranty授权；担保。
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