2. 外语
  3. We Acould see how various Bfactors cause periods of global warming and cooling Conly if we combine past data Dwith current knowl

We Acould see how various Bfactors cause periods of global warming and cooling Conly if we combine past data Dwith current knowl

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问题 We Acould see how various Bfactors cause periods of global warming and cooling Conly if we combine past data Dwith current knowledge.
选项 A、 
B、 
C、 
D、 
答案A
解析 Could is an incorrect modal in the result clause of this future real conditional sentence. Correction: can.
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