For centuries,people have wondered______ this continent is really like,since it is covered with soild thick ice and deep snow all the year round.

A.what B.how C.which D.whether

　　---------------------------------

答案

A what

　　---------------------------------

解析：

几个世纪来，人们好奇大陆原来是什么样的，而它已被坚固的冰雪覆盖常年覆盖