单项选择题

A．To see what happened to the survivors of the disease.
B．To study animals that can also get infected with the disease.
C．To look for the plants that could cure the disease.
D．To look for the plants that could cure the disease.
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单项选择题
A．It’s a requirement for psychology majors.B．She wasn’t able to get into the traditional course.C．She lives far from the university.D．She has to work a lot of hours this semester.
A．It’s a requirement for psychology majors.
B．She wasn’t able to get into the traditional course.
C．She lives far from the university.
D．She has to work a lot of hours this semester.
单项选择题
A．They were frightened and distressed.B．They swam away when the speaker was turned on.C．They swam closer to examine the speaker when it was turned off.D．They didn’t seem to be frightened and kept swimming near the speaker.
A．They were frightened and distressed.
B．They swam away when the speaker was turned on.
C．They swam closer to "examine" the speaker when it was turned off.
D．They didn’t seem to be frightened and kept swimming near the speaker.
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