为了转播火箭发射的实况，在发射场建立了发射台用于发射广播和电视信号．已知传输无线电广播信号所用电磁波的波段为中波，而传输电视信号所用电磁波的波段为微波，为了不让山地阻挡信号的传播，使城市居民能收听和收看实况，必须通过建立山顶转发站转发无线电广播信号还是电视信号？简述理由．

完形填空

King Hiero asked a crown-maker to make him a gold crown, 1when the king got the crown, he asked himself, “Is the crown made completely   2  gold?”

  Then the king   3   the crown to Archimedes, the   4   scientist in the kingdom. Archimedes thought about the problem   5    a slave poured some water into a bath for him. Archimedes got in the bath and some water came out of it,   6    the floor.

  “That’s it!” shouted Archimedes. “Some of the water will move out when we put an object in water. The object displaces the water. A big object will displace a lot of water. A small object will displace only a little water.” Archimedes was very  7  .

  Archimedes went to the palace to   8    the crown . It weighed only one kilogram. He put the crown in a pot of water. Five centimeters of water came out. Then he put one kilogram of gold in another pot of water. Three centimeters of water came out. Archimedes said to King Hiero, “Silver made the crown bigger. The crown displaced   9  water so it was not made completely of gold. It was made of both gold and silver.”  

  King Hiero became very   10   when he heard this, and then he sent the crown-maker to prison.

将下列陈述句改成反问句

①我活着没有劲。

②我没想到那是诀别。

文化自信源于对时代发展潮流、中国特色社会主义伟大实践的深刻把握，源于对自身文化的充分肯定、对自身文化生命力的坚定信念。一段时间以来，全国各地综艺节目为了保持收视率，纷纷引进海外节目。《奔跑吧兄弟》《中国好声音》《爸爸去哪儿》，都是靠花巨额资金引进的海外版权，继而再“你模仿我，我复制他”，在引进版节目和模仿版的夹击下，缺少创意的本土节目表现平平，只有《开讲啦》《汉字英雄》等少数节目因富有原创特色而让人耳目一新。

请用唯物辩证法观点就如何处理我国文化和外来文化的关系提两条建议并说明原因。