我能给下列句子填上恰当的关联词。
①北京的春节____排场,____分外热闹。
②____孩子们要放鞭炮,____要过春节了。
③____除夕之夜要守岁,____除了很小的孩子,没有人睡觉。
④小孩子们买各种花炮燃放,____不跑到街上去淘气,在家中照样能有声有光地玩耍。
⑤北京____城市,____它也跟着农民一齐过年,____过得分外热闹。
化简分式2mm2-4-mm-2的结果是( )
Are you able to send a letter with pictures and sounds to someone somewhere in the world without a stamp(邮票) on it? Using a computer you can send e-mails quickly and easily. The post is much slower than e-mail. E-mail can send its message to the other side of the world in seconds.
E-mail is easy to use and it saves time and money. The differences in time in different parts of the world do not matter when sending e-mail. It's twenty-four-hour service(服务) that you can send e-mail at any time of the day or night. No one has to be there to get e-mail. It does not matter if your friends are in beds when you send e-mail to them, or you are seeing a movie at the movie theater when they send e-mail back.