单项选择题

What kind of goods can not be sold in auctions

A．Those produced in the same factories.
B．Those provided by the same sellers.
C．Those which have the same qualities.
D．Those which have only one bidder.

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热门试题

单项选择题

It can be inferred from the passage that _____.

A．raising the world’s temperature only a few degrees would not do much harm to life on the earth
B．lowering the world’s temperature merely a few degrees would lead many major farming areas to disaster
C．almost no temperature variations have occurred over the past decade
D．the world's temperature will remain constant in the years to come

单项选择题

This passage is primarily concerned with _____.

A．the greenhouse effect
B．the burning of fossil fuels
C．the potential effect of air pollution
D．the likelihood of a new ice age