Tomorrow we’ll go hiking in the mountain to experience natureit rains heavily w

问题补充：

--- Tomorrow we’ll go hiking in the mountain to experience nature.

---- it rains heavily when we are still halfway?

A. How so

B. what though

C. what for

D. What if

答案：

A. How so

B. what though

C. what for

(答案→)D. What if

解析：词义辨析。A怎么会这样？B有…关系？C为了..？D要是…又如何？结合句意可知D正确。句意：—明天我们要去山区远足体验自然。—要是我们在半路上下大雨怎么办？