单项选择题 What is an advantage of the buildings meeting the Green Communities Standards? A. Lower running costs.B. Costing less in construction. C. Less air to be lost in hot days.D. Better prices for homeless people.

单项选择题 专题研究咨询中的理论和方法研究不包括（）

单项选择题 According to the text, which can best describe the situation of the pirate problems?A．More goods on board are lost.B．Pirate attacks happen in a larger area now.C．The number of attacks has stayed the same these years.D．Pirate attacks are as serious as before along the Somali coast.