2. 外语
  3. ______the climate affects the future sustainable agricultural development? ______the environmental problems are not caused over

______the climate affects the future sustainable agricultural development? ______the environmental problems are not caused over

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问题 ______the climate affects the future sustainable agricultural development?
______the environmental problems are not caused overnight?
选项 A、 
B、 
C、 
D、 
答案B
解析 题句信息对应于BOOK 2中第一段第二句中：Global environmental problems arise out of the accumulated impacts from many years’...由其中的accumulated与many years’两处不难看出作者的意思与题句意思相符，即引起环境问题的原因由来已久，故答案为B。
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