单项选择题

A．To see what happened to the survivors of the outbreak.
B．To study animals that can also get infected with the disease.
C．To find out where the virus originates.
D．To look for the plants that could cure the disease.
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单项选择题
A．They make him feel good.B．They make no impact on him.C．They bore him.D．They make him angry.
A．They make him feel good.
B．They make no impact on him.
C．They bore him.
D．They make him angry.
单项选择题
A．The same person—author of The Cat in the Hat.B．Friends of the speakers.C．Psychology professors.D．Fictional characters.
A．The same person—author of The Cat in the Hat.
B．Friends of the speakers.
C．Psychology professors.
D．Fictional characters.
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