禁止船舶向内河水域排放废油、残油、货物残渣和船舶垃圾。
参考答案：对
The early pioneers had to many hardships to settle on the new land.
A．go along with
B．go back on
C．go through
D．go into
落水者体温下降的速度只取决于水温和采取自救的方法。（）
