单项选择题

Hibernation is a seasonal practice. This means it （）

A．takes place only during a particular season
B．occurs only during the night
C．is a daily practice
D．only happens when a species becomes over-populated

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热门试题

单项选择题

The best title for this passage is （）

A．Traffic Crowding in New York City
B．Air Pollution in New York City by Cars
C．Special Lanes for Passengers
D．A Solution to Traffic Problem in New York

单项选择题

Bicycle lanes probably means （）

A．narrow passages between buildings for bicycles
B．roads full of bicycles
C．special parts of the road for bicycle riders only
D．roads for bicycles only