皮皮学，免费搜题
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【单选题】
二次检索是指( )A.
在第一次检索的结果中进行检索
B.
第二次全新检索
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】How is a booth decorated successfully?
【单选题】How has the system for renting space changed?
A.
Exhibitors must pay for the booth in full prior to April 9.
B.
The rental fees have been reduced.
C.
Cancellation fees are listed on the registration form.
D.
The payments must be made at the time of registration.
【多选题】How many types of booth do we usually have ?
A.
Standard booth
B.
Peninsula booth
C.
Island booth
D.
Linear booth
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