Crows are probably the most frequen

Crows are probably the most frequently met and easily identifiable members of the native fauna of the United States. The great number of tales, legends, and myths about these birds indicates that people have been exceptionally interested in them for a long time. On the other hand, when it comes to substantive -- particularly behavioral -- information, crows are less well known than many comparably common species and, for that matter, not a few quite uncommon ones: the endangered California condor, to cite one obvious example. There are practical reasons for this.

Crows are notoriously poor and aggravating subjects for field research. Keen observers and quick learners, they are astute about the intentions of other creatures, including researchers, and adept at avoiding them. Because they are so numerous, active, and monochromatic, it is difficult to distinguish one crow from another. Bands, radio transmitters, or other identifying devices can be attached to them, but this of course requires catching live crows, who are among the wariest and most untrappable of birds.

Technical difficulties aside, crow research is daunting because the ways of these birds are so complex and various. As preeminent is generalists, members of this species ingeniously exploit a great range of habitats and resources, and they can quickly adjust to changes in their circumstances. Being so educable, individual birds have markedly different interests and inclinations, strategies and scams. For example, one pet crow learned how to let a dog out of its kennel by pulling the pin on the door. When the dog escaped, the bird went into the kennel and ate its food.

22. What is the main topic of the passage?

A. The ways in which crows differ from other common birds
B. The myths and legends about crows
C. The characteristics that make crows difficult to study
D. The existing methods for investigating crow behavior

23. According to the first paragraph, what evidence is there that crows have interested people for a long time?

A. The large number of stories about crows.
B. The frequency with which crows are sighted
C. The amount of research that has been conducted on crows
D. The ease with which crows are identified

24. The word 'comparable' in line 5 is closest in meaning to

A. interestingly
B. similar
C. otherwise
D. sometimes

25. In line 6, the author mention the endangered California condor as an example of a species that is

A. smaller than the crow
B. easily identifiable
C. featured in legends
D. very rare

26. In line 6, the author mentions the endangered California condor as an example of a species that is

A. crows
B. subjects
C. intentions
D. researchers

27. According to the second paragraph, crows are poor subjects for field research for all of the following reasons EXCEPT

A. They can successfully avoid observers.
B. They are hard to distinguish from one another
C. They can be quite aggressive.
D. They are difficult to catch.

28. In the second paragraph, the author implies that using radio transmitters would allow a researcher who studies crow to

A. identify individual crows
B. follow flocks of crows over long distances
C. record the times when crows are most active
D. help crows that become sick or injured

29. According to the third paragraph, which of the following is true about crows?

A. They seldom live in any one place for very long.
B. They thrive in a wide variety of environments.
C. They have marked preferences for certain kinds of foods.
D. They use up the resources in one area before moving to another.

30. In line 19,the word 'inclinations' is closest in meaning to

A. tricks
B. opportunities
C. preferences
D. experiences

31. In lines 19-21, the author mentions a pet crow to illustrate which of the following?

A. The clever ways that crows solve problems
B. The differences between pet crows and wild crows
C. The ease with which crows can be tamed
D. The affection that crows show to other creatures

32. Which of the following statements is supported by the passage?

A. Crows have relatively long lives.
B. Crows have keen vision
C. Crows are usually solitary
D. Crows are very intelligent.

Kết quả (Trung) 1:

乌鸦可能是美国的原生动物的最经常遇到的和易于识别的成员。大量的故事、 传说与神话关于这些鸟表明人们已很长时间格外感兴趣。另一方面，实质性的 — — 尤其是行为 — — 信息的时候，乌鸦很少有人知道比许多比较常见的物种，和那一件事，不是几个很少见的： 濒危的加州神鹫，举一个明显的例子。有实际的理由。乌鸦是臭名昭著的穷人和加重领域研究课题。敏锐的观察者和快速的学习者，他们是精明的其他生物，包括研究人员和避免他们擅长的意图。因为他们是如此众多，活动和单色的它很难区分一只乌鸦从另一种。乐队、 无线电发射机或其他识别装置可以附加到他们，但这当然需要捕捉活的乌鸦，是 wariest 和最最机警的鸟类之一。技术上的困难放在一边，乌鸦研究是令人生畏的因为这些鸟的方式是如此的复杂多样。作为卓越是多面手，这一物种的成员巧妙地利用各种生境和资源，和他们可以很快地适应他们的情况的变化。所以由此，鸟类个体有明显不同的兴趣和爱好、 战略和诈骗。例如，一只宠物乌鸦学会了如何让狗出窝拉钉在门上。当狗逃走了时，那只鸟走进狗窝，吃了它的食物。22.什么是这篇文章的主题？A.乌鸦从其他常见的鸟类有不同的方式B.神话和传说乌鸦C.特点使乌鸦难学D.现有的方法调查乌鸦行为23.根据对第 1 段，什么证据有乌鸦很长时间，有兴趣的人？A.大量关于乌鸦的故事。B.与乌鸦有远见的频率C.用量进行了的研究对乌鸦D.易用性，确定了乌鸦24.第 5 行中的 ' 类似' 一词是最接近的意义A.有趣的是B.类似C.其他D.有时25.在第 6 行，撰文人提到为例，是一种濒危的加州神鹫A.小于乌鸦B.容易辨认C.在传说中精选D.非常罕见26.在第 6 行，作者提到为例，是一种濒危的加州神鹫A.乌鸦B.主题C.意图D.研究人员27.根据第二段，乌鸦是差的科目，为实地研究为所有除了以下几个原因A.他们可以成功地避免了观察员。B.它们很难区分彼此C.他们可以很有攻击性。D.他们很难赶上。28.在第二段，作者暗示使用无线电发射机会允许研究员研究到乌鸦A.确定个别的乌鸦B.按照成群的乌鸦在很长的距离C.记录当乌鸦是最活跃的时代生病或受伤的 D.帮助乌鸦29.根据第三段，下列哪一项是正确的关于乌鸦？A.他们很少居住在任何一个地方很长时间。B.他们在各种各样的环境中茁壮成长。C.它们标记某些种类的食物的首选。D.他们移动到另一个之前使用了一个地区的资源。30.在第 19 行，'倾向' 一词是最接近的意义A.技巧B.机会C.首选项D.经验31.在第 19-21 行作者提到了宠物乌鸦来说明下列哪一项？乌鸦的聪明的方法解决问题B.宠物乌鸦和野生乌鸦之间的差异C.易用性与乌鸦可以被驯服D.乌鸦给其他生物的影响32.下列陈述哪被支持这篇文章？A.乌鸦有相对较长的生活。B.乌鸦有敏锐的目光C.乌鸦是通常单生D.乌鸦是非常聪明的。

Kết quả (Trung) 3:

乌鸦可能是最经常遇到的和美国本土的动物很容易辨认的成员。的故事，很多传说和神话，这些鸟类表明人们已经在他们非常感兴趣，很长一段时间。另一方面，就实质性——特别是行为——信息，乌鸦是少为人知的许多相对常见的物种，因为这件事，没有几个是非常罕见的濒危的加利福尼亚秃鹰，举一个明显的例子。这有现实的原因。

乌鸦是出了名的贫困加剧学科领域的研究。敏锐的观察者和快速的学习者，他们对其他生物的意图，精明的，包括研究人员，并善于避开他们。因为他们是如此之多，活跃，和单色的，很难区分一只乌鸦从另一个。带，无线电发射机，或其他识别设备可以连接到他们的，但这当然需要捉活的乌鸦，谁是其中最敏感、最不可引导的鸟类

技术困难之外，乌鸦研究是艰巨的因为这些鸟的方法是如此复杂多样的。作为杰出的是通才，这个物种的成员创造性地开发了大量的栖息地和资源，他们可以迅速适应环境的变化。如此可教，鸟类个体有明显不同的兴趣和爱好，策略和诡计。例如，一个宠物乌鸦学会了如何让狗从狗窝里拉动销门。当狗逃走了，鸟钻进狗窝吃食物

22。文章的主题是什么？

A.如何在乌鸦不同于其他常见的鸟类
B.神话传说关于乌鸦
C.使乌鸦难
D.特性研究现有研究乌鸦行为

23方法。根据第一段，有什么证据证明乌鸦有兴趣的人长时间？

A.大量关于乌鸦。乌鸦
B.频率与正常
C.量的研究已进行了乌鸦
D.使乌鸦识别

24。“比较”在5行，意思最接近的是A.有趣B.类似



否则
D.有时

25。在6行，作者提到濒危的加利福尼亚秃鹰作为一个例子，一种是

A.小于乌鸦
B.容易识别C.特色传说

D.非常罕见

26。在6号线，作者提到了濒危的加利福尼亚秃鹰作为一个例子，一种是

A.乌鸦B.主体C.意图


D.人员

27。根据第二段，乌鸦是可怜的学科领域的研究在以下原因除了

他们可以成功地避免观察员。
他们是很难区分彼此
C.