下图表示某种生物的部分染色体发生了两种变异的示意图，图中①和②，③和④互为同源染色体，则图a、图b所示的变异（   ）

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.