A. Heavy but warm.

　B. A little sad but cosy.

　C. Relaxing and delightful.

　D. Very serious and unhappy.

4.What has the author learned from his experience?

　A. A friend in need is a friend indeed.

　B. Being present can make a big difference.

　C. The family harmony is the happiest thing in life.

　D. Being a volunteer can make one's life more significant.

　　【文章大意】本文是一篇记叙文。经过几次出现在诸如灾难现场、失去亲人的朋友家里等，作者体会到出现产生的巨大力量，因为这不仅帮助了别人，也提高了自己。

1.C 【解析】细节理解题。根据第一段末we were greeted with a burst of gratitude (感激)from the first person we met....I hadn't really done anything yet.可知，我们只是和他们见面，还没有做什么，故选C。

3.D 【解析】词义猜测题。根据画线词后一句中His family, playing guitars and singing, allowed him to be present with them as though he were still fully alive.可知，当时气氛并不严肃，故选D。

4.B 【解析】细节理解题。根据第 4 段中In my life, I am repeatedly struck by the healing power of presence.可知，每次的出现都会产生很大的影响，故选B。

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