问题
填空题
IEEE 802参考模型对应OSI参考模型的数据链路层与（）。
答案
参考答案：物理层
解析：
IEEE 802参考模型对应OSI参考模型中的数据链路层与物理层。
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IEEE 802参考模型对应OSI参考模型的数据链路层与（）。
参考答案：物理层
解析：
IEEE 802参考模型对应OSI参考模型中的数据链路层与物理层。
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| What do you hear? A Native American and his friend were in downtown New York City, walking near Times Square in Manhattan. It was during the lunch hour and the _1_ were filled with people. Cars were honking, taxis were 2 around corners, sirens (汽笛)were howling, and the sounds of the city were almost 3 . Suddenly, the Native American said,"I hear a cricket." His friend said,"What? You must be 4 . You couldn't possibly hear a cricket in all of this 5 !" "No, I'm sure of it," the Native American said,"I heard a 6 ." "That's crazy," said the friend. The Native American listened 7 for a moment, and then walked across the street to a big cement plant where some bushes were 8 . He looked into the bushes, beneath the branches, and sure enough, he 9 a small cricket. His friend was utterly 10 . "That's incredible(不可思议)," said his friend."You must have superhuman ears." "No," said the Native American."My 11 are not different from yours. It all depends on what you're listening for." "But that can't be," said the friend."I could never 12 a cricket in this noise." "You, it's 13 ,"came the reply."It depends on what is really 14 to you.Here, let me show you." He 15 into his pocket, pulled out a few coins, and discreetly 16 them on the sidewalk. And then, even with the noise of the 17 street still blaring in their ears, they noticed every head within twenty feet 18 and look to see if the money that tinkled on the 19 was theirs. "See what I 20 ?" asked the Native American."It all depends on what's important to you." | ||||
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