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,this is Liy．
B：Hello,Lily．____
A：Oh,Paul．____
B：I'm reading a book about Chinese food．____
A：I'm watching Animal World on CCTV．Do you like animals?
B：Yes．____
A：I like tigers,too．Let's go to the City Zoo this afternoon．
B：Sounds great．____．
A：Let's ride a bike there．
B：OK．Riding a bike is good exercise.
A：See you then．
B：See you．
A．It is Paul speaking． B．My favorite animals are tigers． C．Who's that? D．What are you doing at home? E．How can we get there? F．What is your brother doing? G．What about you? |
，
在
上的投影为
，
轴上的投影为2，且
，则