选择体育运动健身方法原则.
参考答案：
1.因人制宜、各取所需
2.循序渐进、持之以恒
3.重视发展心肺功能
4.重视健身运动的环境卫生和人身安全
元朝时，来扬州且在此为官三年的意大利著名旅行家是
A．玄奘
B．鉴真
C．崔致远
D．马可·波罗
During cargo operations, your vessel develops a list due to the center of gravity rising above the transverse metacenter. To correct the list, you should（）.
A.shift weight to the high side
B.shift weight to the centerline
C.add weight in the lower holds or double bottoms
D.remove weight from the lower holds or double bottoms
