问题
选择题
After the break, the lecturer went on to talk ______ about the new academic concept. [ ]
A. at length
B. in all
C. in turn
D. at most
答案
答案：A
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After the break, the lecturer went on to talk ______ about the new academic concept. [ ]
A. at length
B. in all
C. in turn
D. at most
答案：A