除起飞、降落或者依法规定的情形以外，民用航空器不得飞越( )上空。
A．城市市区
B．城市郊区
C．农村村镇
D．农村农业区
参考答案：A
For sustainable development, the government has decided to give __________ to those energy conserving and environmental-- friendly business in many aspects.
A．profit
B．interest
C．advantage
D．preference
布袋中有除颜色以外完全相同的8个球，3个黄球，5个白球，从布袋中随机摸出一个球是白球的概率为 ▲ ．
