鲍的选幼时期应在（）。
A、担轮幼虫期
B、面盘幼虫
C、围口壳幼体
D、稚鲍
参考答案：A
In the past, he rarely spoke unless others were speaking about something that ______ to him.
A．tended
B．addicted
C．appealed
D．applied
区段宽度等于（）之和。
A.区段运输平巷宽度
B.区段回风平巷宽度
C.采煤工作面长度
D.区段煤柱宽度
