单项选择题

It seems as if many Internet companies such as AT&T WorldNet and Yahoo ______.

A．have jumped on some kinds of cars or trucks
B．have begun their v-mail business operations
C．have started to demonstrate to the public
D．have begun their musical performance

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单项选择题

Who are Mrs. Smith and Mrs. Jones mentioned in the first paragraph

A．Shop assistants.
B．Friends of the shop manager's.
C．Two regular customers of the store.
D．People representing any of the regular customers of the old general store.

单项选择题

How has the job of the store manager changed

A．He doesn't sell tea or washing power any more.
B．He must try hard to remember the names of the regular customers.
C．He has to give advice and make decisions when problems arise.
D．He has to take care of a large staff as well as business.