阅读下面的短文，并完成短文后的任务。Have you ever wondered why birds sing? Maybe you thought that

小题1:shouting at /to?

小题2:D

小题3:A bird will also do the same thing. /A bird will do the same thing, too./A bird will do the same thing as well.

小题4:set up

小题5:The reason(s) why birds sing

小题1:根据文章的句子：you might shout.可知你可以大叫，by后面接动名词：shouting at /to sb向某人叫喊

小题2:细节题：根据第三段的句子：A territory is an area that an animal, usually the male, claims（宣称）as its own.可知选D

小题3:翻译此题的时候注意“也”的表达：too，as well（放在句末），also（放在句中）。

小题4:最后一段出现的setting up territories.可知是建立领地， set up相当于 establish

小题5:文章的第一段的句子：Have you ever wondered why birds sing? 是主题句：概括为：The reason(s) why birds sing