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        Squirrels can be left- or right-handed

        2020-06-28 04:54:18高呈寶
        瘋狂英語·新策略 2020年6期
        關(guān)鍵詞:同位語難句點(diǎn)石成金

        A study at the University of Exeter in January 2020 found that squirrels that strongly favored a paw(爪子) —whether right or left—performed less well at learning tasks.

        Firstly, how did the researchers discover that squirrels favored a side (known as lateralization) in the first place? Moreover, once they knew which paw the squirrel preferred, how did they know the information was an intelligence or performance indicator? Finally, what does it all mean? Can researchers really draw substantive conclusions between lateralization and learning in squirrels and humans? Let's see.

        Like humans, other animals often favor one side of their body for certain tasks. For example,if you ask your dog to shake hands, he may always offer his left (or right) hand. The frequency of his offer varies according to the degree of lateralization in the animal.

        Dr. Lisa Leaver is the program director of the Master Science Exeter Animal Behavior program. She says some studies suggest that lateralization makes brains more efficient because each brain hemisphere is focusing on particular tasks.She explained that in fish and birds there was evidence that being strongly lateralized meant for better brain function,but that “l(fā)imited data from studies of mammals suggest a weak or even negative relationship”.Leaver and her colleagues were looking for whether there was association between strong lateralization and poor cognitive (認(rèn)知的) performance, and they used the gray squirrels at Exeter's Streatham Campus as their subjects.

        In the study, the squirrels had to take peanuts out of a transparent tube. Generally, squirrels catch food with their mouths but there was a problem: the tube was too narrow for the squirrels'mouths. They had to use a paw. Researchers watched more than 30 squirrels, collecting enough data from 12 of the subjects for their report. They wanted to see how quickly each squirrel figured out the problem (assessing learning) and whether they favored one paw over the other (determining lateralization).

        Their conclusion is that strongly lateralized squirrels are not good at learning. Interestingly,some research also suggests that ambidextrous (雙手通用的) people (those who favor neither right nor left hand) may be more creative.

        閱讀檢測

        1. What can we know about lateralization in the text?

        A. It makes brains less efficient.

        B. It tells the difference between humans and animals.

        C. It shows stronger evidence in birds than that in fish.

        D. It explains the phenomenon that animals favor a side.

        2. What can we infer from the study of Leaver and her colleagues?

        A. The squirrels at campus are used in the experiment.

        B. Strongly lateralized squirrels have better performance.

        C. Enough data collected from 30 squirrels makes for the conclusion.

        D. The squirrel's lateralization has a poor link with its cognitive performance.

        語言學(xué)習(xí)

        難句分析

        She explained that in fish and birds there was evidence that being strongly lateralized meant for better brain function, but that “l(fā)imited data from studies of mammals suggest a weak or even negative relationship”.

        【翻譯】______________________________________________

        【點(diǎn)石成金】本句同時含賓語從句與同位語從句。第一個與第三個that引導(dǎo)賓語從句,作動詞explain的賓語;第二個that引導(dǎo)同位語從句,解釋說明evidence的內(nèi)容。

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