问题
选择题
An economist is____________expert who will know tomorrow why_________things he predicted yesterday didn't happen.
A．the; \
B．the; the
C．an; the
D．an; \
答案
答案：C
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An economist is____________expert who will know tomorrow why_________things he predicted yesterday didn't happen.
A．the; \
B．the; the
C．an; the
D．an; \
答案：C