从方框中选择适当的句子完成对话，其中有一项是多余的。（5分）

A: Morning! What can I do for you?

B: We’d like to make a trip for a weekend holiday.

A: There are many travel routes（路线）小题1:

B: We’d like to choose Dalian.

A: It’s really beautiful. I’m sure you’ll enjoy yourselves there.

B:   小题2:

A: By plane.

B:   小题3:

A: About one hour. How long will you stay there?

B: About two days. 小题4: .

A: $1500.

B: Thank you very much.

A:   小题5: . Have a wonderful trip.

IE可以同时打开的主页数为（）

A.一个

B.两个

C.多个

D.用户定义数