Medical researchers reached the ____ long ago that smoking is a serious hazard to health.( )(本题2.0分) A、 decision B、 investigation C、 conclusion D、 explanation

Medical researchers reached the ____ long ago that smoking is a serious hazard to health.( )(本题2.0分)
A、 decision
B、 investigation
C、 conclusion
D、 explanation

出自：河南科技大学-大学英语

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