2. 外语
  3. A、Fire prevent. B、Pest control. C、House construction. D、Toxic chemicals. B

A、Fire prevent. B、Pest control. C、House construction. D、Toxic chemicals. B

admin2010-06-11  63
问题  
选项 A、Fire prevent.
B、Pest control.
C、House construction.
D、Toxic chemicals.
答案B
解析
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大学英语六级

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