皮皮学，免费搜题
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【单选题】
使用密码技术不仅可以保证信息的 ,而且可以保证信息的完整性和准确性,防止信息被篡改、伪造和假冒。A.
抗攻击性
B.
控制安全性
C.
机密性
D.
网络服务正确性
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】I don't understand what your plan is exactly. Could you be a little more________? [ ]
A.
special
B.
particular
C.
specific
D.
typical
【简答题】Born in America, I spoke English, not Chinese, the language of my ancestors. When I was three, my parents flashed cards with Chinese 21 at my face, but I pushed them 22 . My mom believed I would l...
【单选题】---Could you tell me ? ---Sorry, I have no idea. I wasn't at the party.
A.
what does she say at the party
B.
what did she say at the party
C.
what she says at the party
D.
what she said at the party
【单选题】Mum, I was wondering if you could lend me a few dollars until I________ on Friday.
A.
get paid
B.
got paid
C.
have paid
D.
had been paid
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