閱讀下面的短文，并完成短文后的任務(wù)。
Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all, you probably also sing or whistle when you are happy.
Some scientists believe that birds do sing some of the time just because they are happy. However, they sing most of the time for a very different reason. Their singing is actually a warning to other birds to stay out of their territory.
Do you know what a “territory” is? A territory is an area that an animal, usually the male, claims（宣稱）as its own. Only he and his family are welcome there. No other families of the same species（物種）are welcome. Your yard and house are your territory where only your family and friends are welcome. (76▲) If a stranger should enter your territory and want to hurt you, you might shout. Probably this would be enough to frighten him away.
If so, you have actually frightened the stranger away without having to fight him. (78▲)一只鳥也將會做同樣的事. But he expects an outsider almost any time, especially at nesting （筑巢）season. So he is screaming（尖叫）all the time, whether he can see an outsider or not. This screaming is what we call a bird’s song, and it is usually enough to keep an outsider away.
Birds sing loudest in spring when they are trying to attract a mate（同伴）and warn others not to enter the territory of theirs.
You can see that birds have a language of their own. Most of it has to do with attracting mates and setting up territories.
小題1:根據(jù) (76) 處劃線部分的意思來完成下面句子。（每空一詞，共2詞）
You might frighten a stranger away by _______ _______ him if he should enter your territory and want to hurt you.
小題2:根據(jù)文章，給下列問題選擇最佳選項。
What is a bird’s “territory”?  (       )
A．A place where other families of the same species are welcome.
B．A place where a bird can sing loudly.
C．An area where birds often fight against each other.
D．An area which a bird considers to be its own.
小題3:將 (78) 處劃線句子翻譯成英語。
_______________________________________________________________.
小題4:從文中找出一個與“establish” 同義的短語，并填在橫線上。
____________________________________________.
小題5:概括本文的中心大意（不超過10個單詞）。
_______________________________________________________________.

小題1:shouting at /to 
小題2:D
小題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.
小題4:set up
小題5:The reason(s) why birds sing

小題1:根據(jù)文章的句子：you might shout.可知你可以大叫，by后面接動名詞：shouting at /to sb向某人叫喊
小題2:細節(jié)題：根據(jù)第三段的句子：A territory is an area that an animal, usually the male, claims（宣稱）as its own.可知選D
小題3:翻譯此題的時候注意“也”的表達：too，as well（放在句末），also（放在句中）。
小題4:最后一段出現(xiàn)的setting up territories.可知是建立領(lǐng)地， set up相當于 establish
小題5:文章的第一段的句子：Have you ever wondered why birds sing? 是主題句：概括為：The reason(s) why birds sing
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