通读下面的对话,然后根据上下文补全对话。A:Look,Mona!{#blank#}1{#/blank#}
B:Oh,it's a computer. It is widely used in today's world.
A:You are right. {#blank#}2{#/blank#}
B:It was invented in 1971.
A:{#blank#}3{#/blank#}
B:It is used for helping us work,study ,send e—mails and so on.
A:{#blank#}4{#/blank#}
B:It was invented by some American scientists.
A:By the way ,what are you going to be when you grow up?
B:{#blank#}5{#/blank#} and invent many useful inventions for our motherland.
A:OK. Let's work hard to make our dreams come true.