单选题 Which of the following statements is TRUE accorching to the text?

A、 Every year, Chicago spends about $ 4,000 on cooling the city.
B、 The design of the garden on the City Hall specially takes weight the roof can stand into consideration.
C、 The Mayor urged the environmental department to look into rooftop gardens in Hamburg and build similar ones in America.
D、 Heat islands mainly refer to those dark colored rooftops which receive and retain heat and will not easily release the heat.

【正确答案】 B

【答案解析】[解析] 根据第六段大意可排除[A]，[C]、[D]，因其中的描述都与第七段的内容不符。