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【单选题】
下列各项关于云的叙述中,不正确的是A.
云概念的提出最早可以追溯到20世纪60年代
B.
目前的云分为公有云、私有云和混合云
C.
云服务价格高昂，企业将自己的数据放到云端会增加企业负担
D.
混合云是近年来云计算的主要模式和发展方向
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皮皮学刷刷变学霸
举一反三
【单选题】— Julia said she sent you a birthday card yesterday. Have you got it? — Oh, really! I haven't _____my mailbox yet. [ ]
A.
examined
B.
reviewed
C.
tested
D.
checked
【单选题】听力原文：W: Oh, you have come back! M: Yeah, I was back yesterday. W: Did you visit your sister last weekend? M: Well, I intended to, but she called up saying she would be out of town. W: So where did you...
A.
He visited his sister.
B.
He went to Shanghai.
C.
He stayed at home.
【多选题】群体性突发事件的类型包含（）
A.
参与事件的主体不同，事件的类型也不同
B.
根据事件本身的性质，也可以把事件划分为不同类型
C.
根据事件规模大小，把事件划分出不同类型
D.
根据区域划分的类型
E.
民族划分类型
【单选题】听力原文：F: The teacher told us to finish Ex. 5 yesterday. Have you done it?M: Oh, sorry. I forgot it. What did the teacher tell them to do?
A.
Not to forget it.
B.
To finish Ex. 4.
C.
To finish Ex. 5.
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