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单项选择题

The number of patients who died of the Ebola-like disease in southern Sudan has now been up to

A．fifteen
B．four
C．eleven
D．twenty

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单项选择题According to Dr. Walker, which can describe the newly reported disease most appropriately

A．The newly reported disease holds a mortality rate of 50 percent.
B．The virus of the disease can be spread through contract with infected sweat.
C．Ninety percent of patients infected by the virus die of the disease.
D．The virus of the disease can only be carried by desert rats and primates.

单项选择题The fears that the Ebola-like disease could spread into Uganda can be explained by the fact that ______.

A．Uganda shares the same border line with Sudan
B．Uganda has suffered from a similar disease before
C．Uganda has a great deal of disturbance in the North
D．Uganda borders can't prevent the virus from spreading