将左边和右边的句子连成对话。
①Do you like giraffes?____ A. It's a snake.
②What's that?____ B. I hear tigers.
③What colour are the pandas?____ C. No, I don't.
④What do you hear? ____ D. They're black and white.
下列内容不属于细菌菌落特征的是( )
下列说法正确的是( )①教科书是长方形;②教科书是长方体,也是棱柱;③教科书的封面是长方形.
在所有的两位数10~99(包括10与99)中,任取一个数,则这个数能被2或3整除的概率是( )