单项选择题

The greenhouse effect_______.

A．is a problem raised recently
B．has drawn extensive attention all over the world
C．is the warming caused by an increase of CO₂
D．should be imputed to the well-developed countries

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热门试题

单项选择题

On the morning of the appointment, he was dressed in his best and_______.

A．shaved unusually well
B．unusually shaved well
C．well shaved unusually
D．unusually well shaved

单项选择题

A．veryB．obviouslyC．extremelyD．too

A．very
B．obviously
C．extremely
D．too