题目内容
（请给出正确答案）
In telephone or electric service, regulation is necessary because ______.
A．in these areas monopoly has been established
B．these areas are faced with fierce competitions
C．these enterprises are inclined to make unfair sentfits
D．these enterprises concern a lot with the public security
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更多“In telephone or electric servi…”相关的问题
A.ECS/MSG、ELEC/HYD、PERF/APU和CONF/MCDP；
B.ECS/MSG、ELEC/HYD、CONF/MCDP和EPCS；
C.ECS/MSG、ELEC/HYD、PERF/APU和EPCS；
D.ECS/MSG、ELEC/HYD、PERF/APU和ENG/EXCE。
A．There is no telephone in them.
B．The telephone isn't working.
C．The telephone is busy.
D．There is no telephone booth.
A．A salesman.
B．A telephone repairman
C．A plumber.
D．An electrician.
A．On the first page of the telephone book.
B．At the end of the telephone book.
C．In the front of the white pages.
D．Right after the white pages.
Using the Internet costs the owner of a telephone extra money.
A．Y
B．N
C．NG
Jack didn't telephone his mother because ______ .
A．he was too busy
B．his telephone didn't work
C．his mother had no telephone
A.a scanner
B.a telephone call
C.e-mail
D.a CPU
The best possible title for the passage might be ______.
A．Using the Telephone
B．Functions of Telephone
C．Telephone Development
D．Advantages of a Telephone Directory
—De you know who invented______ telephone？—No, but it is really______ telephone？
A．the; the
B．/; the
C．the; /
D．the; a
The first telephone line was built in 1877.()
