单项选择题

Constance Hale says "email has been an incredible boon to communication". What does she mean by this()

A．People want to see the person they are talking to on the phone.
B．Email is easier than talking on the phone.
C．People are using writing and reading more with email.
D．Email is not private enoug

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单项选择题

Which of the following are not expected within the next 5 years()

A．Talking on giant screens.
B．Automatic language translators.
C．Computers that respond to brain waves.
D．Computers that do not need wires.

单项选择题

How will wireless computers and Internet services help rural areas()

A．One of the biggest barriers to Internet use is getting wires into rural areas.
B．The wireless computers will be cheaper.
C．People in rural areas don't have anything else to do.
D．People in rural areas already have wireless boxes on their roofs.