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来一道英文题Accordingtotherecentresearch,heavycoffeedrinkingandheartattackisnotnecessaryandeffect.A.reasonB.impactC.factD.causeA为什不能选啊?

题目详情
来一道英文题
According to the recent research ,heavy coffee drinking and heart attack is not necessary ____and effect.
A.reason
B.impact
C.fact
D.cause
A为什不能选啊?
▼优质解答
答案和解析
cause and effect是固定词组,意思是因果关系.