问题 填空题

已知地铁列车每10min一班,在车站停1min,则乘客到达站台立即上车的概率为________.

答案

将问题转化为几何概型中的长度比,共11分钟,列车停1分钟,故长度比为

完形填空
完形填空。阅读下面短文,选择最佳作案。(每小题1分,共10分)
The Great Wall of China has a history of over two thousand years. It runs from the east to the west in North China . It is about 6,300 kilometers    46     . It is often   47          “The Ten-thousand- Li Great Wall”. It is one of the “Seven Wonders” of the ancient world.
The Great Wall is    48     for ten men to walk side by side. Horses can also run along it, too. The Great Wall    49    stones and bricks(砖). There are huge stones on       50    side and on the highest part. But now some sections of it are worn out.
There are tall watchtowers along the Great Wall. Once upon a time, the soldiers kept    51     the enemies(敌人) in the watchtowers day and night. They made   52    on the towers to   53    each other when the enemies came.
Nowadays we don’t use the Great Wall to keep away the enemies any more. It is a famous place of  54    to all the people in the world. Every year  55     people come to visit it from all over the world.
小题1:
A. wideB.tallC.longD.high
小题2:
A. callingB.callC.calledD.calls
小题3:
A. enough wideB.wide enoughC. more enoughD.too enough
小题4:
A. was made ofB.was made fromC.was made inD.was made by
小题5:
A. bothB.allC.eachD.either
小题6:
A. seeingB.watchingC.lookingD.reading
小题7:
A. fireB.a kiteC.a faceD.a toy
小题8:
A. tellB.talkC.speakD.say
小题9:
A. interestedB.interestingC.interestD.interests
小题10:
A. thousandB.thousandsC.thousands ofD.thousand of
选择题