题目

根据对话内容，从方框中选择恰当的选项补全对话，其中有两项多余。A:Hello, David． B:No, it's not mine．It's Neil's．A: B: He's my cousin．A: B：Yes, he likes it so much, and he is in the school basketball team (队)．A：That's great． Do you like basketball?B：No．I think it's difficult and boring, but I like tennis．A：Let's go out and play tennis．B：OK． A．Let's go．B．Who's Neil?C．What about you?D．That's interesting．E．Is it your cousin's?F．Is the basketball yours?G．Does he like basketball?计算：（1）（﹣2ab3）2+ab4（﹣3ab2）；（2）（2a+3）（2a﹣3）+（a﹣3）2．