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问题 填空题

甲乙两数的比是2：5，甲数比乙数少______%，乙数比甲数多______%．

答案

甲数比乙数少：

（5-2）÷5，

=3÷5，

=60%；

乙数比甲数多：

（5-2）÷2，

=3÷2，

=150%；

答：甲数比乙数少60%，乙数比甲数多150%

故答案为：60，150．

完形填空

根据短文内容及首字母提示，填写所缺单词，使短文意思完整。

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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单项选择题

关于黄系统叙述正确的是（）

A、只能由2号发动机驱动的液压泵提供压力

B、只能用一个电动液压泵给黄系统提供压力

C、2号发动机驱动的液压泵提供压力和一个电动液压泵给黄系统提供压力
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