2007年12月21日，经过我国考古工作者的艰苦努力，沉睡中国南海底800多年的宋代古沉船“南海一号”成功出水。根据你所掌握的历史知识，可以判断“南海一号”上有大量（    ）

如图，P为⊙O外一点，PA切⊙O于点A，且OP=5，PA=4，则sin∠APO等于(  )

下列最适于霉菌生长的环境是（　　）

通读全文，根据对短文的理解，选择正确的答案填空。    

    My name is Tony. I'm1  English boy. I'm twelve years old. I'm a  2 . Jim is my good friend. He3 from the USA. We are in 4  class. He's twelve years old,  5 . I have a nice  6 . Now, look  7  my photo. Jim has a long face, small eyes, brown and short hair. And the boy in a yellow cap is me. Yellow is my favourite 8 . Jim has a  9 . Her name is Kate. She is ten years old. Kate has a round face and  10 eyes. They look different.

绝对值不大于4的整数的积是（　　）