【題目】 Young trees don’t just grow; they develop a personality and learn more about their environment and how they should best behave in it. They also help each other out whenever there’s trouble.

Personality, just as among people, varies among trees. Some are anxious, some bold. On the author’s land, there are three oak trees growing close together. One of the oak trees always starts to shed its leaves two weeks earlier than the others. Since they all experience the same temperature, the same soil and the same length of day, such variables can’t be the explanation. So what’s happening? Well, this tree is simply more careful than the others. Whoever holds on to their leaves longer can do more photosynthesis(光合作用) and store more nutrients. However, the longer a tree keeps its leaves, the higher the risk of injury.

Not only do trees make their own decisions, they also learn from their mistakes. A tree, for example, keeping its leaves too long during one year will never make this mistake again. This leads to several other conclusions:trees must notice the temperature and the length of the day and be able to save their experiences somewhere. Obviously, trees don’t have brains, but it is thought that in the sensitive tips of their roots they keep track of information and experiences.

But trees aren’t only clever when it comes to caring for themselves. They also support each other whenever there’s trouble by giving warnings and even taking care of sick and weak conspecifics with nutrients. For example, one time the author found a very old tree stump. Its insides had rotted a long time ago to topsoil. But the wood on the outside of the stump was still living. How was this possible? Well, the stump was nourished by its neighbors with nutrients from the root system, and had been for at least 400 years!

Why do trees do such a thing？It’s simple: it’s better together. Trees need the forest; it protects them from storms, provides the right microclimate and warns them of attacks.

【1】Why does the author mention the three oak trees?

A.To illustrate trees can learn from experiences.

B.To show trees can make independent decisions.

C.To explain trees are quite supportive to each other.

D.To prove trees have the same personalities as humans.

【2】According to the text, which of the following best describes general features of trees?

A.Anxious and bold.

B.Smart and adventurous.

C.Helpful and wellbehaved.

D.Adaptable and supportive.

【3】What does the underlined phrase “do such a thing” mean?

A.Give warnings.B.Offer assistance.

C.Depend on others.D.Provide nutrients.

【4】Where does this text most probably come from?

A.A public lecture.B.A science book.

C.An experiment report.D.A travel journal.

【答案】

【1】B

【2】D

【3】B

【4】B

【解析】

這是一篇說(shuō)明文，主要介紹了樹(shù)的智慧：每棵樹(shù)都有它不同的個(gè)性，遇到困難時(shí)它們也會(huì)互相幫助；研究發(fā)現(xiàn)，樹(shù)不但能自己做決定，還能從自己的錯(cuò)誤中吸取教訓(xùn)。

【1】

推理判斷題。根據(jù)第二段“Well, this tree is simply more careful than the others.”（這顆樹(shù)只是比其他兩顆更小心而已）和根據(jù)第三段“Not only do trees make their own decisions,”（樹(shù)不僅能自己做決定，）故推知，作者在此處舉例是為了說(shuō)明樹(shù)能自己做決定。故選B。

【2】

推理判斷題。根據(jù)“A tree, for example, keeping its leaves too long during one year will never make this mistake again.”（例如，一棵在一年中保留葉子太久的樹(shù)將永遠(yuǎn)不會(huì)再犯這種錯(cuò)誤。）可推知，樹(shù)木的適應(yīng)能力很強(qiáng)；根據(jù)“But trees aren’t only clever when it comes to caring for themselves. They also support each other”（但是樹(shù)不僅在照顧自己的時(shí)候表現(xiàn)的很聰明，他們也互相支持）可知，樹(shù)木之間會(huì)相互支持。故選D。

【3】

詞句猜測(cè)題。根據(jù)“Why do trees do such a thing？”（樹(shù)木們?yōu)槭裁磿?huì)做這樣的事呢？）可知，此處指的是上文“the stump was nourished by its neighbors with nutrients from the root system, and had been for at least 400 years!”（樹(shù)樁是由它的鄰居們用來(lái)自根系的養(yǎng)分來(lái)滋養(yǎng)的，而且已經(jīng)有至少400年的歷史了�。┕什聹y(cè)do such a thing意為“提供幫助”。B選項(xiàng)Offer assistance意為“提供援助”。故選B。

【4】

推理判斷題。通讀全文可知，本文主要介紹了樹(shù)的智慧：每棵樹(shù)都有它不同的個(gè)性，遇到困難時(shí)它們也會(huì)互相幫助；研究發(fā)現(xiàn)，樹(shù)不但能自己做決定，還能從自己的錯(cuò)誤中吸取教訓(xùn)；據(jù)此可推知，本文最可能選自科學(xué)書(shū)籍，故選B。

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