单项选择题

According to the author, the importance of green-spaces in the urban environment ______.

A．is still unknown
B．is usually neglected
C．is being closely studied
D．has been full recognized
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单项选择题
The author suggests that the recreative possibilities of green-space should be provided ______.
A．in special areas
B．in the suburbs
C．in the neighborhood of the house
D．in gardens and parks
单项选择题
The main idea of this passage is that
A．better use of green-space facilities should be made so as to improve the quality of life
B．attention must be directed to the improvement of recreative possibilities
C．the urban environment is providing more recreation activities than it did many years ago
D．priority must he given to the development of obligatory activities
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