单项选择题

Conversation One

A. It helps people get up early.
B. It produces Vitamin
D.
C. It kills cold viruses.
D. It enables us to look healthy.
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单项选择题
A. MIT. B. Reed College.C. Harvard. D. Yale.
A. MI
T.
B. Reed College.
C. Harvard.
D. Yale.
单项选择题
D
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