2. 外语
  3. A、50 underground stations were made waterproof. B、A flood wall was built. C、An alarm system was set up. D、Rescue teams were form

A、50 underground stations were made waterproof. B、A flood wall was built. C、An alarm system was set up. D、Rescue teams were form

admin2010-06-11  31
问题  
选项 A、50 underground stations were made waterproof.
B、A flood wall was built.
C、An alarm system was set up.
D、Rescue teams were formed.
答案B
解析
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