下列河岸中,冲刷严重的是:(箭头表示水流方向)
A、①
B、②
C、③
D、④
答案:B
The swimming pool is _______ only in summer. So you can't go there now.[ ]
A. present
B. available
C. precious
D. convenient
中华全国总工会旧址纪念馆馆舍原来是什么?