Question

Do you know the mibile phone____by Martin Cooper in 1973 A invented B was inwented

Answer 1

A
Do you know the mibile phone____by Martin Cooper in 1973 ?
非谓语动词作定语。invent跟the mibile phone是动宾关系，所以要用过去分词。
而要选B的话得改成Do you know the mibile phone__which was inwented__by Martin Cooper in 1973 ?的形式。这样就成了定语从句了。
如有需要，可以再问哈。O(∩_∩)O

Answer 2

B

学习是一件愉快的事！ (*^__^*)
请及时采纳，多谢！

Answer 3

选A 做mobile phone的定语

Answer 4

A,作定语

Answer 5

A 过去分词作定语。