黑奴贸易中的“三角贸易”巡回于 [ ]
A.亚洲、非洲、欧洲
B.欧洲、非洲、美洲
C.欧洲、非洲、大洋洲
D.拉丁美洲、非洲、亚洲
答案:B
_____ to give up smoking, he threw away his _____ cigarettes.
A.Determined; remained
B.Determined; remaining
C.Determining; remained
D.Determining; remaining
膈上肋骨摄影,采用的呼吸方式为().
A.浅呼吸屏气
B.深呼气屏气
C.深吸气屏气
D.平静呼吸屏气
E.腹式呼吸屏气