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问题 单项选择题

在三级清算模式中，（）是由各地资金集中清算中心（各地清算代理机构）同本地证券经营机构办理的证券清算。

A．一级清算

B．二级清算

C．三级清算

D．四级清算

答案

参考答案：B

填空题

质量为2kg的物体由静止开始自由下落，在前2s内重力的平均功率为______W；第2s末重力的瞬时功率为______W．
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听力题

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Only Mother Love is t   小题1:   love. It gives everybody everything all his life. When you are still a b    小题2: , mother takes good care of you as much as p   小题3: . In your waking hours, she always holds you in her a  小题4:  . When you are ill, she stops her work right now to look after you day and night and forgets about h  小题5:  . When you are growing up day by day, she feels very happy. When you are old enough to go to school, mother still looks after you all the time. On cold winter days, she always tells you to put on m 小题6:   clothes. She always stands in the wind waiting for your back from school. When you hurry to leave home w  小题7:  little breakfast, she always feels worried about you at home. She usually knows about your study and spends much money on your school things. When you do well at school, you will see the brightest s   小题8:  on her face.

Mother is always ready to give e  小题9:   she has to her children, not to r  小题10: . What true love it is in the world! We will remember Mother Love for ever!
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