Question

___1____ Maybe you thought that they were just happy. After all, you probably sing or whistle when you are happy.
However, they sing most of the time for a very different reason. ____2___ Some scientists believe that birds do sing some of the time just because they are happy.
Do you know what a “territory” is? A territory is an area that an animal, usually the male, claims(聲稱(chēng))as its own. ____3___ No other families of the same species are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten you, you might shout. Probably this would be enough to frighten him away. If so, you have actually scared the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time, especially at nesting(筑巢)season. So he is screaming all the time, whether he can see an outsider or not.__4__.
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs. You can see that birds have a language all their own. ___5__

A．Only he and his family are welcome there.

B．Most of it has to do with attracting mates and setting up territories.

C．Have you ever wondered why birds sing?

D．Their singing is actually a warning to other birds to stay out of their territory.

E. Have you ever wondered why birds sing?
F. Most of the language is widely used.
G. This screaming is what we call a bird’s song, and it is usually enough to keep an outsider away.

Answer 1

【小題1】E
【小題2】D
【小題3】A
【小題4】G
【小題5】B

解析試題分析：本文是對(duì)鳥(niǎo)兒鳴叫聲的研究，主要是兩個(gè)目的，一個(gè)是吸引異性，另外一個(gè)是現(xiàn)實(shí)主權(quán)。
【小題1】E 根據(jù)After all, you probably sing or whistle when you are happy.說(shuō)明當(dāng)我們開(kāi)心的時(shí)候，我們可能也會(huì)唱歌，故前面應(yīng)該是指唱歌有關(guān)的內(nèi)容，故E項(xiàng)符合上下文。
【小題2】D 根據(jù)上句However, they sing most of the time for a very different reason.說(shuō)明鳥(niǎo)兒的歌聲有不同的原因，也許就是警告地方離開(kāi)自己的領(lǐng)地，故D項(xiàng)正確。
【小題3】A 根據(jù)前句A territory is an area that an animal, usually the male, claims(聲稱(chēng))as its own領(lǐng)地就是他聲稱(chēng)屬于他自己的地盤(pán)。別人不允許進(jìn)入，故A正確。
【小題4】G 根據(jù)上句he is screaming all the time, whether he can see an outsider or not他一直在尖叫，也許這就是我們所謂的鳥(niǎo)兒的歌聲，實(shí)際上是為了警告別的同類(lèi)離開(kāi)。故G項(xiàng)正確。
【小題5】B 根據(jù)本段第一行說(shuō)明鳥(niǎo)兒的鳴叫是與吸引異性有關(guān)，以及第三段中鳥(niǎo)兒的叫聲是為了警告同類(lèi)，顯示主權(quán)。故B說(shuō)法符合上下文。
考點(diǎn)：考查科普類(lèi)短文閱讀
點(diǎn)評(píng)：此類(lèi)文章重在把握上下文之間的邏輯關(guān)系，通過(guò)前后的意思連貫性及細(xì)致性用心的答題，定能完成的很好。