皮皮学，免费搜题
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【单选题】
[WJ-400-200] 对于标准的 IP 地址而言 , 网络的类别可以通过 ( ) 进行判决。A.
网络号
B.
主机号
C.
前几位
D.
后几位
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】tumble
A.
annoy or offend sb.
B.
fall down quickly and suddenly
C.
climb up quickly and suddenly
D.
force sb. to leave a place
【简答题】Students read various kinds of books in it.
【单选题】tumble
A.
to be trapped in difficulty
B.
to fall quickly and without control
C.
to be tired of doing
D.
to become less in number or smaller
【单选题】By piecing together all kinds of evidence collected by various expeditions, the researchers believe the Mayas to be Indians, whose ancestors had come from Asia.
A.
Y
B.
N
C.
NG
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