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【判断题】
在同—平面内，—条直线可以有无数条平行线。 [ ]A.
正确
B.
错误
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举一反三
【单选题】The one thing we need to be alert about the Internet is ____________.
A.
to live our real life with a virtual identity
B.
not to let the virtual life online dominate our real life
C.
to accept whatever information coming to us
D.
to stop using it since it is doing harm to us
【单选题】Analysts commonly describe two distinct modes of communication in the Internet of Things: One is thing-to-person communication, and the other is_______.
A.
person-to-person communication
B.
person-to-thing communication
C.
thing-to-thing communication
D.
client-and-service communication
【单选题】The thing the author like best about the Internet is that ______.
A.
he is able to explain his ideas in a simple language
B.
his writing is not changed by his boss
C.
he is able to communicate with people all over the world
D.
a lot of people have left entries and thanked him for his efforts
【简答题】LED 数码管有 显示和 显示两种方式。
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