The farmers are in bad need of rain,but a (an)          large amount of rainfall will cause Floods

A.Eventually

B.constantly

C.gradually

D.extremely

答案及解析： D

解析：

副词词义辨析题。农民需要雨水但是大量的降雨会导致洪灾。A.Eventually 结果    B．constantly 连续   C． gradually 逐渐   D．extremely 极其 根据句意选D