若最简二次根式与是同类二次根式,则x= . 答案:1;听音,选出与你听到的内容不符部分的序号。( ) 1. Lynn is four years old. A B C D( ) 2. My brother is an bus driver. A B C D( ) 3. What country is west of Canada? A B C D( ) 4. Do you know what country is it? A B C D ( ) 5. He's name is Li Ming. A B C D