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【单选题】
在OSI参考模型中,使不可靠的传输介质变成可靠的传输通道的层是()A.
物理层
B.
数据链路层
C.
表示层
D.
应用层
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反馈参考答案：
举一反三
【单选题】— There are so many problems. I’m so afraid. — You should try to ______your shyness first. You’re not a child any more.
A.
pick up
B.
take away
C.
take off
D.
get over
【多选题】多动症是儿童时期常见的一种行为问题,多动症学生虽然智力能力正常,但学习、行为及情绪方面存在缺陷,主要表现为()。
A.
注意缺陷
B.
活动过多
C.
孤僻
D.
冲动性
【简答题】阅读理解。 Can you remember the day when you spoke your first word? If you can, you are unusual. Try to imagine what first few months of your life were like. I am sure you just spent most of your time eati...
【简答题】阅读理解 Can you remember the day when you spoke your first words? It you can, you are unusual. Try to think what the first few months of your life were like. I'm sure you just spent most of your time eat...
【单选题】I won't tell you ______ to do to work out the problem. You should try your best first. [ ]
A.
how
B.
when
C.
what
D.
where
【简答题】阅读理解 Can you remember the day when you spoke your first word? If you can, you are unusual. Try to imagine what first few months of your life were like. I am sure you just spent most of your time eatin...
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