在C++语言中，打开一个文件就是将这个文件与一个什么建立关联A．流 B．类 C．结构

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有2项为多余选项。

     So, there you are, just sitting there in the subway car, enjoying that book you just bought. 1_____ Or,

the person sitting next to you takes out a nail clipper (指甲刀) and begins cutting his or her nails.

     Annoying? Many of us have to spend some time every day on public transportation (客运). 2_____ So,

to make the trip more pleasant, we suggest the following:

     Let passengers get off the bus or subway car before you get on. 3_____ Stand away from the doors

when they are closing.

     Don't talk loudly on a bus or subway. Chatting loudly with your friends can be annoying (讨厌的) to

others. 4_____.

     Don't think your bags and suitcases deserve (应得) a seat of their own.

     Use a tissue whenever you cough or sneeze (打喷嚏). An uncovered sneeze can spread germs, especially

in crowded places.

     Don't cut your nails or pick your nose on public transportation.

     Don't read over other people's shoulder. 5_____. It can make people uncomfortable. They might think

you're too stingy (小气的) even to buy a newspaper. Or they might think you're judging their behavior.

A. Suddenly, you feel someone leaning over your shoulder reading along with you.

B. Getting off and on in an orderly manner can save time for all.

C. Many people do this on subways, but it's really annoying.

D. We all know that some behaviors are simply unacceptable.

E. Don't shout into your mobile phone on a bus or subway.

F. Mind those manners on the subway.

G. Don't eat food on a bus or subway.

天南市莲湖区法院在审理潘某涉嫌拐卖妇女儿童一案时，被告人潘某指控称受到了侦查人员的刑讯逼供，被迫承认了自己的犯罪事实。在质证过程中，为证明侦查讯问的过程符合法律规定，不存在刑讯逼供，公诉人当庭播放了有关讯问过程的录音录像。则该录音录像应属于何种证据种类？（）

A.视听资料

B.犯罪嫌疑人供述和辩解

C.物证

D.书证

《再别康桥》诗中“康桥”的象征意义？

叶绍钧是新文学史上最早和最有成就的（）小说家。