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【单选题】
TCP/IP 参考模型中的网络接口层对应于 OSI 中的( )。A.
网络层
B.
物理层
C.
物理层与数据链路层
D.
数据链路层
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【单选题】Increasing numbers of parents in the U.S. are choosing to teach their kids at home. In fact, the U. S. Department of Education estimated that, in 1999, around 850,000 children were being homeschooled....
A.
Teacher shortages and lack of funding.
B.
Escalating classroom violence.
C.
Large class and problems inside the classroom.
D.
Dissatisfaction with the educational system.
【简答题】Passage Two Questions 1 to 5 are based on the following passage. Having borne for years the stigma of being one of the most disconnected countries in the world, Cuba is now expanding access to digital...
【单选题】Increasing numbers of parents in the U.S. are choosing to teach their kids at home. In fact, the U.S. Department of Education estimated that, in 1999, around 850,000 children were being homeschooled. ...
A.
Teacher shortages and lack of funding.
B.
Escalating classroom violence.
C.
Large class and problems inside the classroom.
D.
Dissatisfaction with the educational system.
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