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Predators are _______.
A．able to prey even when they are in deep dream sleep
B．more likely to experience dream sleep
C．incapable of preying when immobilized by dreamless sleep
D．good at preying on stupid animals
答案
更多“Predators are _______.A．able to prey even when they are in deep dream sleepB．more likely t”相关的问题
第2题
A．defend nests against predators
B．look at each other
C．locate prey
D．warn against predators
第3题
A．Fewer predators are in the woods.
B．The weather is still warm.
C．The songbirds have finished breeding.
D．Food is still available.
第4题
Cities make good homes for peregrine falcons because they provide
A．bountiful nesting areas, abundant food, and rainwater control basins
B．abundant food, buildings that resemble cliffs, and no natural predators
C．large buildings with chimneys, other wildlife, and well-lighted nesting areas
D．abundant food, chimneys, rubble, and window sills
第5题
Cities make good homes for peregrine falcons because they provide ______.
A．bountiful nesting areas, abundant food, and rainwater control basins
B．abundant food, buildings that resemble cliffs, end no natural predators
C．large buildings with chimneys, other wildlife, and well-lighted nesting areas
D．abundant food, chimneys, rubble, and window sills
第6题
This suggests that these "top dogs" of the ocean are【C6】______and multiplying.【C7】______, such has not been the case, at ieast not for the last 150 years. Trouble has closed in【C8】______these mammals in the form. of equally warm-blooded and even more【C9】______adaptable predators, humans. At sea,【C10】______on land, humans have now【C11】______themselves on the top of the whole great pyramid of life, and【C12】______have caused serious problems for the mammals of the sea, There is a simple【C13】______for this.
【C14】______mammals have the misfortune to be swimming aggregates of【C15】______that humans want: fur, oil and meat. Even so, they might not be so【C16】______to human depredation if they did not, like humans,【C17】______so slowly.
Every year humans【C18】______more than 50 million tons of fish from the oceans without critically depleting the population of any【C19】______. But the slowbreeding mammals of the sea have been all but wiped out by humans【C20】______satisfy their wants and whims.
【C1】
A．involved
B．evolved
C．evoked
D．exceeded
第7题
M: Oh well, congratulations. I hope you were rewarded handsomely.
W: Well, every bit helps. So, about your lecture, I understand you were talking about extinctions.
M: Yes. Well, the crux of my talk was just that, we tend to think of extinction as a dramatic event, but most species die out over quite a period of time.
W: Why do they die off？ I thought they were continuously improving themselves. Natural selection, I think you once mentioned.
M: Ah, but you see while there is natural competition between the species, what determines which species survive is largely by chance.
W: I don't get it. Why do species bother competing？
M: Well, there are short-term advantages. But many species also are helped by others. For example, the common housefly and cockroaches might have died off years ago if not for humans.
W: But you're not saying that humans are so successful merely because of chance？
M: To a certain extent, humans were initially lucky enough to have the right weather conditions and a lack of predators, but now, of course, we survive by ingenuity!
W: So we may never become extinct.
M: NO, because we may be in a crash course to extinction by our continuous exploitation of the environment. We are a relatively young species and our time is not yet overdue.
W: But there are 6 billion of us.
M: Yes, and there're many more houseflies too! Each with the capacity to spread one disease from one person to another in a fast period of time.
(23)
A．She is writing a competitive paper for a scholarship.
B．She is doing a paper.
C．She missed the lecture.
D．She is planning to attend the scholarship award ceremony.
第8题
听力原文：W: Professor Marnes, I wonder if you can fill me in on your lecture last Friday. I had to attend a scholarship award ceremony.
M: Oh well, congratulations. I hope you were rewarded handsomely!
W: Well, every bit helps. So, about your lecture, I understand you were talking about extinctions.
M: Yes. Well, the crux of my talk was just that we tend to think of extinction as a dramatic event, but most species die out over quite a period of time.
W: Why do they die off？ I thought they were continuously improving themselves. Natural selection, I think you once mentioned.
M: Ah, but you see while there is natural Competition between the species, what determines which species survive is largely by chance.
W: I don't get it. Why do species bother competing？
M: Well, there are short-term advantages. But many species also are helped by others. For example, the common housefly and cockroaches might have died off years ago if not for humans.
W: But you're not saying that humans are so successful merely because of chance？
M: To a certain extent, humans were initially lucky enough to have the right weather conditions and a lack of predators, but now, of course, we survive by ingenuity!
W: go we may never become extinct.
M: No, because we may be in a crash course to extinction by our continuous exploitation of the environment. We are a relatively young species and our time is hot yet overdue.
W: But there are 6 billion of us!
M: Yes and there're many more houseflies too! Each with the capacity to spread one disease from one person to another in a fast period of time.
(20)
A．She is writing a competitive paper for a scholarship.
B．She is doing a paper.
C．She missed the lecture.
D．She is planning to attend the scholarship award ceremony.
