【题目】Many plants could move northward and toward the Pacific coast _______rising temperatures and changes in rainfall.
A． for fear of B． in defense of
C． by means of D． in reaction to
在线课程【答案】D
【解析】考查介词短语辨析。句意：许多植物可以向北移到太平洋沿岸，以应对温度的上升和降水的变化。A害怕，担心；B为......辩护，保护，保卫；C通过，依靠；D对......作出反应，回应......。故选D。