Using his skis,Nicholas built a snow cave.He gathered a huge mass of snow and dug out a hole in the middle.Then he piled branches on top of himself,like a blanket,to stay as warm as he could.

　　By that evening,Nicholas was really hungry.He ate snow and drank water from a nearby stream so that his body wouldn􀆳t lose too much water.Not knowing how much longer he could last,Nicholas did the only thing he could-he huddled(蜷缩)in his cave and slept.

　　The next day,Nicholas went out to look for help,but he couldn􀆳t find anyone.He followed his tracks and returned to the snow cave,because without shelter,he could die that night.On Tuesday,Nicholas went out again to find help.He had walked for about a mile when a volunteer searcher found him.After two days stuck in the snow,Nicholas was saved.

　　Nicholas might not have survived this snowstorm had it not been for TV.He 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.

1.What happened to Nicholas one Sunday afternoon?

A.He got lost. B.He broke his skis.

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

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.

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

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

A.did the right things in the dangerous situation

B.watched Grylls􀆳 TV program regularly

C.created some tips for survival