皮皮学，免费搜题
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【单选题】
电信企业对发生的问题缺少认识和了解，为弄清问题的性质、范围、原因而进行的初始调查，称之为（）A.
探测性调查
B.
描述性调查
C.
因果性调查
D.
预测性调查
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】—Can I buy a film ticket? —Oh, sorry, we ___________.
A.
sold them out
B.
sold out them
C.
have sold them out
D.
have sold out them
【单选题】—Why don’t you buy the ticket? —Because I _____ my money. [ ]
A.
have sold out
B.
ran out of
C.
have run out of
D.
have run out
【简答题】宋代五大名窑中______为五大名窑之首。
【单选题】---__________ I have a ticket , please? ---Sorry,sir. All the tickets were sold out ten minutes ago.
A.
May
B.
Need
C.
Must
D.
Should
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