如图所示，探究声音的传播实验中

（1）在玻璃钟罩内的木塞上放一个正在发声的音乐闹铃，此时你____ 听到音乐（填“能”或“不能”）.
（2）用抽气设备抽钟罩内空气，在抽气的过程中，你听到音乐声将会____ ．
（3）如果把钟罩内空气完全抽出我们将____ 听到声音．（填“能”或“不能”），但有时还是能听到铃声．请你分析原因是：____ ．
（4）该实验表明声音不能在____ 中传播．

依次填入下列一段文字空白处的词语，最恰当的一组是（    ）

    谈到小说的未来，我们 ① 感到困惑。②，信息革命使小说成为精英，创造了一种个人署名、出版社出版的模式。③，这种模式正受到极大的挑战。今后的小说是不是 ④ 像以前那样个人署名，⑤  由出版社提供版税或稿费？这种情况能维持多久，在多大程度上能够延续下去，⑥ 不是一个疑问。

材料一：

材料二：两宋时期，“国家的财政收入约80%来自淮河以南地区”，“国家根本，仰给东南”；“丝、棉纺织业、造纸业中心及对外贸易港口多集中在南方”

材料三：

材料四：宋朝的海外贸易超过前代，广州、泉州是闻名世界的大商港，中国商船的踪迹，近至朝鲜、日本，远达阿拉伯半岛和非洲东海岸。朝廷鼓励海外贸易，在主要港口设立机构加以管理。

——摘编自《中国历史》（七年级下册 人民教育出版社）

    What would you do if you had $5, but were limited to two hours to make as much money as possible? Buy a lottery ticket. While this is the most 1suggestion from people, it means a significant risk in return for a 2chance.

    Tina Selling, who invented the3for her students of Stanford University, has a 4story to tell.

    Selling gave each of the fourteen teams a sealed envelope that contains five dollars of “seed funding”. They were5to spend as much time planning, but once they had6the envelop they then had two hours to make as much money as possible. The next week, each team were to7their project in a three-minute presentation.

    It8that most of the 14 teams didn't use the five dollars9 They realized that focusing on the10actually limited the problem way too tightly. They understood that five dollars is essentially11and decided to reinterpret the problem more12what can be done if 13with absolutely nothing?

    The average14on the five dollar investment was 4,000 percent! So what did they 15do?

    One team started a stand on campus to check bike tire16for free and charged $1to refill tires. Another team made17at busy restaurants and then sold each of them for up to twenty dollars to customers who didn't want to18inline. The team who made the greatest 19sold their presentation time to a company that wanted to employ them to advertise. They 20a good business for that company in the three minutes' presentation and brought in $ 650,000.