填入下列文段空白处的词语，最恰当的一组是（    ）

   乐音在基本确定了音高的范围后，有规律的声音节奏或声音组合   ①  成了让人产生美感的第一要素。   ②   声音仅仅含有节奏和有序性，  ③   不能成为“好声音”，钟表的“滴答”声、音乐节拍器的摇摆是最精准的节奏声音，  ④   它却无法给人以美感，  ⑤   会带来厌烦。  ⑥  ，为了使美好的声音成为艺术，还必须具备下一个条件：声音变化的丰富性。

    Some people are afraid of starting a casual(随意的) conversation with a stranger because of a fear of not having anything interesting to say. Fear of refused is also a1for keeping silent. Small talk in a conversation can 2 as a way of warming up and getting to3each other. Most people, no matter 4 successful they are at work, will find the process of 5 small talk uncomfortable, even meaningless.6 , you will have a pretty small world 7 you refuse to let others in. Starting off with a casual comment or question will make others 8, and even just greeting them with a simple “hello” will often be enough.

    Once you have made the first 9 , there is no turning back. You need to keep things 10  before you can politely say goodbye. Think about what you would like to 11 with a new friend and that is what you can ask the other person about. Work, family, hobbies or interests are some12_points of discussion. To keep the ball rolling, you can show that you are really 13in what they are saying. Once you find common 14 of interest, things will certainly15 off from there.

    Small talk can16out to be a pleasant experience. The conversation 17 be brief and casual without turning into a long and boring discussion. Do not let yourself 18 the conversation. Stop worrying about how big of a fool you may appear to be. You may19 find out later on that you have the “20” of getting people to open up to you by engaging them in small talk.

阅读下面小说选段，完成1—5题。
　（甲）中秋过后，秋风是一天凉比一天，看看将近初冬；我整天的靠着火，也须穿上棉袄了。一天的下半天，没有一个顾客，我正合了眼坐着。忽然间听得一个声音，“温一碗酒。”这声音虽然极低，却很耳熟。看时又全没有人。站起来向外一望，那孔乙己便在柜台下对了门槛坐着。他脸上黑而且瘦，已经不成样子；穿一件破夹袄，盘着两腿，下面垫一个蒲包，用草绳在肩上挂住；见了我，又说道，“温一碗酒。”掌柜也伸出头去，一面说：“孔乙已么，你还欠十九个钱呢!”孔乙己很颓唐的仰面答道：“这……下回还清罢。这一回是现钱，酒要好。”掌柜仍然同平常一样，笑着对他说：“孔乙已，你又偷了东西了!”但他这回却不十分分辩，单说了一句，“不要取笑!”“取笑?要是不偷，怎么会打断腿?”孔乙已低声说道：“跌断，跌，跌……”他的眼色，很像恳求掌柜，不要再提。此时已经聚集了几个人，便和掌柜都笑了。我温了酒，端出去，放在门槛上。他从破衣袋里摸出四文大钱，放在我手里，见他满手是泥，原来他便用这手走来的。不一会，他喝完酒，便在旁人的说笑声中，坐着用这手慢慢走去了。
　（乙）范进不看便罢，看了一遍，又念一遍，自己把两手拍了一下，笑了一声，道：“噫！我中了！”说着，往后一交跌倒，牙关咬紧，不省人事。老太太慌了，慌将几口开水灌了过来。他爬将起来，又拍着手大笑道：“噫！好！我中了！”笑着，不由分说，就往门外飞跑，把报录人和邻居都吓了一跳。走出大门不多路，一脚踹在塘里，挣起来，头发都跌散了，两手黄泥，淋淋漓漓一身的水。众人拉他不住，拍着笑着，一直走到集上去了。众人大眼望小眼，一齐道：“原来新贵人欢喜疯了。”老太太哭道：“怎生这样苦命的事!中了一个甚么举人，就得了这个拙病！这一疯了，几时才得好?”娘子胡氏道：“早上好好出去，怎的就得了这样的病！却是如何是好?”众邻居劝道：“老太太不要心慌，我们而今且派两个人跟定了范老爷。这里众人家里拿些鸡蛋酒米，且管待了报子上的老爹们，再为商酌。”

“MH370”航班自 2014 年 3 月 8 日凌晨失联，直至 2015 年 1 月 29 日确定航班失事，期间各国对“黑匣子”都进行了追寻，“黑匣子”能把飞机停止工作或失事坠毁前半小时的语音对话和两小时的飞行高度、速度、耗油量等众多飞行参数都记录下来，需要时把所记录的内容解码，供飞行实验、事故分析之用，则对于黑匣子下列说法正确的是（　　）