单项选择题

According to the report, how many casualties by far are directly due to the radiation

A．about 4,000
B．about tens of thousands
C．about 50
D．about 350,000
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单项选择题
According to the doctor, current ways of controlling bird flu do not include______.
A．cooperating with the farming communities
B．controlling the markets where birds are sold
C．keeping a close watch on the migration of wild birds
D．stopping eating chicken
单项选择题
According to the professor, what characteristic of Earth’s moon should a theory of its origin be able to explain
A．The Moon has no water.
B．The Moon contains almost no iron.
C．Thy Moon is the largest moon in the solar system.
D．Tile Moon does not have a moten core.
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