had often watched Grylls' survival show Man vs Wild. That's where he learned the tips that saved his life. In each episode(一期节目) of Man vs Wild, Grylls is abandoned in a wild area and has to find his way out.

　　When Grylls heard about Nicholas' amazing deeds, he was super impressed that Nicholas had made it since he knew better than anyone how hard Nicholas had to work to stay alive.

　　【文章大意】　本文讲的是一个小男孩在暴风雪中迷路，他不畏艰难，利用在电视中学到的野外生存知识逃脱困境的故事。

　　1. What happened to Nicholas one Sunday afternoon?

　　A．He broke his skis. B．He got lost.

　　C．He hurt his eyes. D．He caught a cold.

　　解析：B　细节理解题。根据第一段Before he knew it，Nicholas was lost，all alone！可知答案。

　　2．How did Nicholas keep himself warm?

　　A．He found a shelter.

　　B．He lighted some branches.

　　C．He kept on skiing.

　　D．He built a snow cave.

　　解析：D　细节理解题。根据第三段Nicholas built a snow cave.以及to stay as warm as he could可知，Nicholas保持温暖的方式是建了一个雪洞。

　　3. On Tuesday, Nicholas ________.

　　A．returned to his shelter safely

　　B．was saved by a searcher

　　C．got stuck in the snow

　　D．stayed where he was

　　解析：B　细节理解题。根据第五段He had walked for about a mile when a volunteer searcher found him可知，星期二的时候，Nicholas被一名志愿搜索者救了。

4. Nicholas left Grylls a very deep impression because he ________.