皮皮学，免费搜题
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搜题
【单选题】
WWW 中的信息资源是以 ( ) 为元素构成的A.
主页
B.
Web 页
C.
图像
D.
文件
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
【单选题】The magician picked three persons______ from the audience and asked them to help him with the performance.
A.
by accident
B.
on occasion
C.
at random
D.
on average
【单选题】The magician picked out several persons ______ from the audience and asked them to help him with the performance.
A.
by accident
B.
on average
C.
on occasion
D.
at random
【单选题】The magician picked several persons ______ from the audience and asked them to help him with the performance.
A.
by accident
B.
at random
C.
on occasion
D.
on average
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