The most densely populated region of America is ______.
A. the southeastern part
B. the northeastern part
C. the northwestern part
D. the Middle Plains
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( ) is a major port of Holland.
Amsterdam
Bali
C. Durban
Dunes
被申请人应在收到申请人副本之日起( )内向复议机构提交答辩书。
A. 7日
B. 10日
C. 15日
D. 30日
______is not one of Mark Twain's works.
A. The Adventures of Tom Sawyer
B. The Adventures of Huckleberry Finn
C. Life on the Mississippi
D. The Portrait of a Lady
S2通常分裂不见于下列哪种情况
A. 室间隔缺损
B. 肺动脉瓣狭窄
C. 二尖瓣关闭不全
D. 完全性右束支传导阻滞
E. 完全性左束支传导阻滞
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