第一节完形填空（共小题；每小题2分，满分30分）阅读下面短文，掌握其大意，然后从〗5各题所给的a、b、c和d项中，选出最佳选项，并在答题卡上将该项涂黑。 i woke up this morning with a fright ！ there appeared to be a mouse in my bed tickling my nose and 1 ____ scratching me. it had to be a mouse, for those tiny sharp little nails were scratching me all across my 2 ____ . it couldn't have been a(n) 3 ____ as i didn't own any pets； it couldn't have been a rat, because if what i had read about rats was 4 ____ ，their sharp teeth could 5 ____ their way through solid stone. they do this because their front teeth never stop growing and this is the only way to keep them 6 ____. i
