发布时间 : 星期一 文章Quiz for Unit 3更新完毕开始阅读2c4d9f14a6c30c2259019e60
that your product really is different from everyone else’s. 9. There are a large number of patent examiners, too, whose only job is to examine whether your claim is ____________ or not.
Class ____________
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Number
_____________ Name
________________
10. Bell’s interest in deaf education led him ____________ (invent) the microphone. 11. The original telegraph sent a
message ____________
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distances using Morse code.
12. If sound waves
could be reproduced in a moving electrical
____________, they could be sent along a wire.
13.The day is coming _____________ telegraph wires will
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be laid on to houses just like water or gas --- and friends will talk to each other without leaving home.
14. I called you up
many times yesterday, but I couldn’t __________
_________. Maybe your phone was
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