问题
选择题
It is well known that ______ dolphin is _______ intelligent animal. [ ]
A. the; the
B. /; an
C. the; an
D. a; the
答案
答案：C
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It is well known that ______ dolphin is _______ intelligent animal. [ ]
A. the; the
B. /; an
C. the; an
D. a; the
答案：C