Question

求帮忙选词填空，stable，personnel，tap ，wire， dot ，practical ，invaluable ，competence， dynamic

Before the telephone was invented ,people used Morse code to contact each other.They only needed to ( ) a pattern of ( )along a( )to creat amessage that could be sent hundreds of miles .this invention was very ( )and served people very well .in the eighteenth century in the Midwest of the USA it was ( ).it warned the law offcials of the coming of those unwanted for serious crimes .it also spread good news far andwide -the discovery ofgold in California,for example. it was so important that job applicants for the railway had toprove their ( )in Morse code .in this waythe railway ()were very quickly made awareof any problem to the track or the trains.Of course,nowadays,with more modern ( )waysof sending information ,Morse codehas become much less popular .But we should not forget how valuable itwas in the past in helping tomake a really unsettled environment more ( )

Answer 1

1.tap 2 dots 3. wire 4.practical 5.invaluable 6.competence 7.personnel 8.dynamic 9.stable

这篇文章讲的是摩尔斯电码的使用以及在过去带给人类的用处，希望能帮助到你，谢谢

Answer 2

1.tap 2 dots 3. wire 4.practical 5.invaluable 6.competence 7.personnel 8.dynamic 9.stable

Answer 3

额 累不累啊？这么简单的题，抄了很久吧