单项选择题

According to the speaker，in which country were the earliest known diamonds found

A．South Africa.
B．Eastern Russia.
C．India.
D．Congo.
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单项选择题
What do we learn about the present web business
A．Web business is no longer in fashion.
B．Business-to-business sales are the trend.
C．Web business is prosperous in the consumer market.
D．Many companies still lack confidence in web business.
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