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【多选题】
在校外访问中央电大图书馆的数字资源（数据库）时，需要对读者身份进行验证，可以使用哪些读者信息认证方式？A.
电大学生证号
B.
电大用户名
C.
图书馆帐号
D.
开放电子公务（OA）帐号
拍照语音搜题，微信中搜索"皮皮学"使用
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【单选题】I n each set below, two of the sentences are punctuated correctly. Your job is to pick out the one sentence that is not correctly punctuated.
A.
Harbor Springs is now a summer resort for the affluent but a century ago it was the Indian village of my Ottawa ancestors.
B.
Harbor Springs is now a summer resort for the affluent , but a century ago it was the Indian village of my Ottawa ancestors.
C.
Harbor Springs is now a summer resort for the affluent ; a century ago it was the Indian village of my Ottawa ancestors.
D.
...
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【单选题】I try to _____ a few dollars each month in order to buy a new bike.
A.
set up
B.
set out
C.
set off
D.
set aside
【单选题】Considering his health, I advise him to ______ an hour or two each day to work out.
A.
set about
B.
set off
C.
set up
D.
set aside
【单选题】My mum suggested that I _____ some money each month for future use.
A.
set aside
B.
set up
C.
set off
D.
set out
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