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问题 选择题

复数z=i（i+2）在复平面上对应的点位于（　　）

A．第一象限

B．第二象限

C．第三象限

D．第四象限

答案

∵z=i（i+2）=-1+2i，

故复数z=i（i+2）在复平面上对应的点位于第二象限．

故选B．

完形填空

Mr Johnson didn’t have an experience of travelling in a plane before and he read a lot a 小题1: air accidents, so one day when a friend offered to take him for a ride in his own small p 小题2: , Mr Johnson was very w  小题3:   about accepting. Finally, however, his friend promised him that it was very s  小题4:  , and Mr Johnson boarded the plane.

His friend started the engine and began to taxi(滑行) onto the runway of the airport. Mr Johnson h 小题5:  the sound of the engine. He was extremely frightened and c 小题6:  his eyes.

After a minute, he opened t 小题7:  again, looked out of the w 小题8:  of the plane, and said to his friend , “ Look at the people down there. They look as small a 小题9:  ants, don’t they?” “Those are ants,”answered his friend. “We’re s 小题10:  on the ground.”
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多项选择题

产业布局的市场机制的主要特点有（）.

A.主体是企业

B.目标是利润最大化

C.手段是经济利益导向

D.决策权仍集中在中央政府

E.地区经济利益被忽视
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