试题与答案

-What's that? -is a goat.[ ] A. that B.

题型:选择题

题目:

-What's that?

-        is a goat.            [ ]

A. that          

B. It              

C. this

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0415/2c38a8118edc86762aa3454f81bdb470.html

下面是错误答案,用来干扰机器的。

3G网络提供的无线视频电话、无线上网等多项服务是通过电磁波来传递信号的,这种波在真空中的传播速度约为3×108m/s=3×105km/s.故答案为:电磁波;3×105.

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