填入下面文段空白处的词语，最恰当的一组是比尔﹒布莱森在他的《万物简史》里介绍了超级火山的巨大破坏性。以美国为例，①境内有一座超级火山喷发，②其产生的巨大能量将摧毁数千公里范围内的所有东西，无数人会因此丧命，③会导致整个国家被深达6-20米的火山覆盖，随后④会出现其他许多可怕后果，⑤目前人类还无法预测美国超级火山在何时喷发，⑥了解了它的杀伤力有利于我们制订各种减损预案。 ①  ② ③ ④ ⑤ ⑥

She didn’t ask her boyfriend to buy her a car______, she bought one for him

_______the Chinese team got 51 gold medals in the 29th Olympics______ all Chinese people.

We are ______ bombarded (轰炸) with images from TV, radio, magazines and newspapers telling us what to wear, how we should look and smell, or what car to drive[ ]

He was a bit nervous. He _________his spare breath with a soft sound that was almost heard by the audience.