某种计算机完成一次基本运算的时间用科学记数法可以表示为1.2×10^﹣9s，则此数所对应的原数为____ s．

    My friend Tony is an American 1. He is ten years old. He lives2 his family in China now. There are 3  people in his family; his mother Mrs. Green, his father Mr. Green and his little sister Amy. He has a white cat. 4 name is Betty. Look！Amy is playing 5Betty. His father, Mr. Green, is watc­hing TV. His mother is doing housework. What about Tony? He is doing 6 Chinese homework. He can't 7Chinese well, but he likes Chinese very much. Tony's 8 works in a TV station. His father works in a school as an 9 teacher. Tony and his sister 10 to the same school.

材料一：

材料二：董仲舒说：“《春秋》大一统者，天地之常经，古今之通谊也。今师异道，人异论，百家殊方，指意不同，是以上亡以持一统；法制数变，下不知所守。臣愚以为诸不在六艺之科、孔子之术者，皆绝其道，勿使并进。邪辟之说灭息，然后统纪可一而法度可明，知所从矣。”

材料三：黄宗羲说：“凡天下无地而得安宁者，为君也。是以其未得之也，茶毒天下之肝脑，离散天下之子女，博我一人之产业，曾不惨然。……敲剥天下之骨髓离散天下之子女，以奉我一人之淫乐，视为当然，……然则，为天下之大害者，君而已矣！”

下列各句中划线成语的使用，全部正确的一项是（   ）

①京剧被视为“角的艺术”，有好角儿才有好戏，有好戏才能吸引观众，因此，京剧艺术能否薪尽火传，人才队伍建设至关重要。

②任何人要想成就一番事业，就应该静下心来研究学问，对外界的喧嚣纷扰充耳不闻，忍得住孤独，耐得住寂寞。

③近段时间来有关李嘉诚旗下产业撤资、罢工等诸多话题甚嚣尘上，但大多数人都持观望态度，静待新的确切消息。

④迪士尼品牌最终是对美国梦想和美国价值的输出，目前国内的主题公园总体上与国际老牌巨头迪士尼、环球景城等很难琴瑟和鸣。

⑤他在家里不声不响，妻子总是觉得他木讷，把他当成闷葫芦，但在社会上他却玲珑剔透，无论做什么事总是一点就通。

⑥是留在京津冀，还是回到家乡，这是个问题。面对高涨的房价，他四处求田问舍最终在海淀区按揭购买了一套小户型住房，选择在北京奋斗。

①0.3____0.5    ②3.4____4.3    ③5.1____4.9