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问题 多项选择题

存在以下哪些情况，持卡人应当申请换领社会保障卡。（）

A、有效期满

B、损坏

C、卡面污损、残缺不能辨认

D、持卡人相貌与卡面相片相差较大的

E、持卡人的姓名、社会保障号码、服务银行变更

答案

参考答案：A, B, C, D, E

填空题

有一空瓶质量是15g，装满水后总质量是60g，则该瓶子容积是______mL；若用此空瓶装满另一种液体后总质量是69g，则该液体的密度是______㎏/m3．
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听力题

“Are you OK?” “Yes, I am OK.” You may hear this kind of talk around you. “OK” ____most widely ________(use) around the world. Where did “OK” come from?  Let’s take a look!

“OK” was first written in the Boston Morning Post on March 23, 1839. It read: o.k. - oll correct (all correct). It was only a joke at that time. But later “OK” _____(become) popular. People used it______ (say) that all was well.

Today we use this expression many times a day.
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