Find and correct the mistakes marked A,B,C,D in the following sentences.
(1)\x05 Edison had to invent fuses,which was an important safety device
A B C
beloved by insurance companies.
D
(2)\x05According to its size computer systems are usually divided into
A B C D
four main types.
(3)\x05To the end of 1880s,the electric industry had become a rather big
A B C D
one in the U.S.A.
(4)\x05Modern communication process is involved many technologies.
A B C D
(5)\x05They are engaged in designing a new type of computer rather than
A B C
repair the machine.
D