当x=3、y=1时，代数式(x+y)(x-y)+y²的值是____.

—The boy can speak both English and Japanese _________ he is only ten.

—Wow, what a clever boy!

    My name is Jim. I am a student. At school, I have a good friend. His name is Mike. He is tall. He has short hair. We are classmates, too. We go to school at  7:00  o'clock. We go home at  5:00. It's  3:15  now. It's time to play games. Let's go to the playground. We play football with some boys.

They are         too.

下列句子是比喻句的有____ 。　　

A.通往广场的路不止一条。生活也是这样。   

B.我大喜过望，脚下仿佛踩着一朵幸福的云。  

C.从此，一条时装的河流，源源不断地从我的时装店里流了出来。

D.脚底下星罗棋布的村庄环抱着罗马，如蛛网般交叉的街道，一条条通往城市广场。