耙吸船开挖淤泥质土宜选用的耙头是（）。
A.IHC耙头
B.文丘里耙头
C.加利福尼亚耙头
D.滚刀耙头
参考答案：A
In the world of sport, the four-minute mile—the "dream mile"—until recently was the most intriguing goal remaining to the individual athlete.
A．dating
B．demanding
C．thought-provoking
D．fascinating
