单项选择题


What can be inferred about Prof. Clark

A．He has been unpredictable lately.
B．He is usually punctual.
C．He advised his students to wear watches to class.
D．He rarely notices when students are late.
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单项选择题
What does the phrase to run errand mean in this context
A．To go shopping.
B．To operate computers.
C．To help do something.
D．To shop electronically.
单项选择题
According to the professor, why is the buffalo population increasing
A．More buffalo are surviving the winter.
B．Fewer buffalo are dying of disease.
C．More buffalo are being born.
D．Fewer buffalo are being killed by hunters.
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