单项选择题

George did ______ than anyone else.

A．much work
B．more work
C．work much
D．work more

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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

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.