请根据句意从方框中选择合适的单词，并用其适当形式填空，使句子通顺。

 (1)Look! They are watching the film Lost in Thailand with ____  on the Internet.

(2)My father's ____  birthday happens to be on Father's Day.
(3)The Internet is____  used in most families in our country today.
(4)Those beautiful paintings don’t belong to us. They are those____ .
(5)It will make you feel ____  if you sit too long in front of the computer.

已知一个等腰三角形的两边长分别是2和5，那么这个等腰三角形的周长为(      )

地形剖面图是根据等高线地形图绘制而成的。下图为我国南方某海岛的地形剖面图，据此完成下列小题。