Grows 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.
Grows 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 adapt 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 the birds are so complex and various. As preeminent 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.
26 The word "them" in line 10 refers to
(C) intentions
(D) researchers
答案说是C,但是我觉得应该选择D invention是目的,意图,是个抽象的概念么,乌鸦怎么能avoid抽象的目的呢?只能avoid带有inventions的researcher啊。请明白的人给我讲讲….
28. In the second paragraph, the author implies that using radio transmitters would allow a researcher who studies crow to
(A) follow flocks of crows over long distances
(B) identify individual crows
答案是A。虽然根据常识我们知道给鸟类安装radio transmitter来跟踪鸟类行径,但是本文没有说这一点啊,而且明显说了radio transmitters, or other identifying devices,说明目的应该是B阿,不明白ing
不是说一切按照文章么。文章没提到的不能擅自加进去么….
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.
答案是A,可是文章也没明确说他们经常换环境,只是说they can quickly adjust to changes in their circumstances他们很快适应环境的变化,我认为和B更贴近一点….
32. Which of the following statements is supported by the passage?
(B) Crows have been vision
(D) Crows are very intelligent
答案是B,我也同意,但是我同时认为D好像也对…..
我知道讲这段阅读对于没有问题的大侠来说是浪费时间的事,非常抱歉。如果哪位好心人有时间有心情给我解答疑惑,将感激不尽,不知道错在哪里是件很郁闷的事......恳请赐教! |