下列物质放在敞口容器中一段时间后,质量减小的是( )
A.浓硫酸
B.浓盐酸
C.氢氧化钠
D.氯化钠
答案:B
Around the world, more and more people are _________ dangerous sports activities, because life in modern societies has become safe and boring.
A.taking out
B.taking off
C.taking part in
D.taking care of
52岁,确诊为子宫内膜腺癌行开腹术,术中切开子宫标本,肉眼见癌瘤组织侵犯宫体及宫颈,正确的临床分期是()
A.Ⅰa期
B.Ⅰb期
C.Ⅱ期
D.Ⅲ期
E.Ⅳ期