In the past few years so many areas throughout the world have been hit by such destructiv

问题补充：

In the past few years, so many areas throughout the world have been hit by such destructive earthquakes, snowstorms and tsunamis we have never experienced before, makes us worried a lot about nature disasters.

A. A. that; that B. as; which C. which; it D. when; as

答案：

解析：定语从句考查题。第一空因为先行词被such修饰所以关系词用as；第二空关系词which指代整个主句。过去几年中世界范围内有如此多的地区被我们没有经历过的地震、暴风雪以及海啸袭击，这使得我们非常担忧自然灾害。