好言相待，舒心暖怀；恶语伤人，结怨招灾。”这句格言说明（    ）

①谦虚恭敬的言行举止是相互尊重，有效沟通、增进友情的必要条件

②傲慢粗鲁的言语动作是导致敌意、妨碍沟通、恶化关系的重要因素

③对任何人，我们都应笑脸相迎，好言相待

④是否讲究文明礼貌在人际交往中会导致不同的后果

____×____=____(元)

  The Dress That Turns into a Coca Cola Machine 

    This specially designed dress looks like a normal dress，but if you unfold it and cover yourself，you may look like a Coca Cola vending machine（自动售货机）. Because there are many vending machines like that on the street，it must be easy for you to hide．If you feel that someone is following you or there is some danger，you can disappear within five seconds．But don't use it to scare your classmates．That'll be rude.
                                  

    The M-Dress is a nice black dress．It is also a mobile phone．It accepts a standard SIM card and allows the wearer to receive calls without carrying an actual(真实的) phone in their pocket or purse．You just need to bring your hand to your ear when you want to answer a phone call．When you finish talking and release your hand，the call will close．It is fashionable and useful．But it will certainly be an embarrassing moment when your dress rings in public．
  Air Conditioned Jackets 

    You will love these air-cooled jackets in summer time when it is very hot outdoors．The jacket has fans that draw air in．The fan is powered by an inside battery．Now it is possible to spend nearly every second of your day with cool air．