问题
单项选择题
After the conference, the participants were scattered into smaller groups to have a free session of talks.
A. bee
B. donkey
C. cow
D. bull
答案
参考答案：D
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After the conference, the participants were scattered into smaller groups to have a free session of talks.
A. bee
B. donkey
C. cow
D. bull
参考答案：D