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【判断题】
PSE肉(pale,soft and exudative muscle)是指受到应激反应的猪屠宰后产生色泽苍白、灰白、质地软和肉汁渗出的肉A.
正确
B.
错误
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【简答题】阅读理解。 As skies are filled with millions of migrating (迁徙) birds, European scientists say the seasonal wonder appears to be strange: The fatter the bird, tile better it flies. The results of their stud...
【简答题】As skies are filled with millions of migrating(迁徙)birds, European scientists say the seasonal wonder appears to be strange: The fatter the bird, the better it flies. The results of their study led to ...
【单选题】As skies fill with millions of migrating birds, European scientists say the seasonal miracle appears to depend on a seeming ______ The fatter the bird, the more efficiently it flies.
A.
interruption
B.
description
C.
qualification
D.
contradiction
【简答题】Such crashes are the second-leading cause of death for migrating birds, after habitat(栖息地loss, with an estimated number of death ranging up to a billion a year.
【简答题】A．Migrating birds follow a certain smell or scent. B．Animals migrate by following changes in temperature. C．Animals find their way by recognizing geographical features. D．Migrating mammals use the ris...
【单选题】Three quarters of the land here _____ wet land, an ideal place for migrating birds. A．are B．isC．
A.
15. Three quarters of the land here _____ wet land, an ideal place for migrating birds. A．are
B.
is
C.
have been
D.
Being
【简答题】Scientists have been puzzled by the phenomenon that migrating birds fly not just in groups all the time, but in 'V' formations and they have tried to figure out what benefit birds get from this partic...
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