参考答案

正确答案：A
解析：extremely的意思是“极端地，极度地”，例如：Earthquakes are extremely difficult to predict．地震是非常难预测的。actually的意思是“事实上”，例如：Did he actually hit you or just threaten you?他真的打你了还是只是吓唬你?eventually的意思是“最后，终于”，例如：He eventually escaped and made his way back to England．他最终得以逃脱，回到了伦敦。