问题
多项选择题
动脉导管未闭患儿超声心动图可表现为()
A．左心房增大
B．二维超声心动图可以直接探查到未闭合的动脉导管
C．叠加彩色多普勒可见红色流柱出自降主动脉，通过未闭导管沿肺动脉外侧壁流动
D．脉冲多普勒在动脉导管开口处可探测到典型的收缩期与舒张期连续性遄流频谱
E．左心室增大
答案
参考答案：A, B, C, D, E
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动脉导管未闭患儿超声心动图可表现为()
A．左心房增大
B．二维超声心动图可以直接探查到未闭合的动脉导管
C．叠加彩色多普勒可见红色流柱出自降主动脉，通过未闭导管沿肺动脉外侧壁流动
D．脉冲多普勒在动脉导管开口处可探测到典型的收缩期与舒张期连续性遄流频谱
E．左心室增大
参考答案：A, B, C, D, E
Many parents make their children do chores around the house. For some families, teaching children what to do and how to do chores is easy. But in other families, getting children to do some housework can be a very big problem. It is a good idea for parents to teach their children at an early age. All family members must work together to make the house clean, and each person must do his or her share(份) of the work. We can do this by starting plan of chores and responsibilities(责任) when children are young. Chores are good for children—even very young ones. Doing chores can teach children many important skills(技能) like working together. Jobs also teach children what is fair(公平). The skills and value(价值) from doing chores will be good to children all their lives. 小题1:The first paragraph(段) tells us ____________.
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