【单选题】 Listen and choose what you hear.
【单选题】 Listen and choose what you hear.
【单选题】 Listen and choose the most proper responses to the questions you hear.
A.
Yes, his father is a doctor.
B.
No, this is not a factory.
C.
No, he works in that one.
【单选题】 Listen and choose what you hear.
【单选题】用以改善河流的水流条件,调整水流对河床及河岸的作用,以及为防护水库、湖泊中的波浪和水流对岸坡的冲刷的建筑物,称为