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【判断题】
“”即水的富营养化，这种现象严重威胁三峡水库， 淡水中“”造成的最大危害是：饮用水源受到威胁，藻毒素通过食物链影响人类的健康。以上说法是否正确?A.
正确
B.
错误
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【单选题】Global Health officials have been closely monitoring a new virus related to SARS that is believed ______ at least one person in Saudi Arabia．
A.
to kill
B.
to be killing
C.
to have killed
D.
kill
【简答题】American Health officials believe that public education is the best way to limit______.
【单选题】According to Federal health officials, the fact that more West Nile cases have been reported indicates that
A.
more states are affected.
B.
the average age dropped drastically.
C.
health officials are more alert to the disease.
D.
the epidemic season began a month earlier.
【简答题】写出下列音程结构相同与结构不相同的等音程,并标明名称。
【简答题】Health officials in western Siberia are to begin in slaughter of thousands of birds today after identifying Russia's first outbreak of a bird flu strain that can be fatal in humans. Doctors in neighbo...
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