由0，1，2，3，4，5共六个数字可组成多少个没有重复数字且能被5_爱下问搜题

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问题解答题

由0，1，2，3，4，5共六个数字可组成多少个没有重复数字且能被5整除的六位数？

答案

216

组成的六位数与顺序有关，但首位不能排0,个位必须排0或5，因此分两类：第一类：个位数排0，此时前五位数由1，2，3，4，5共五个数字组成，这五个数字的每一个排列对应一个六位数，故此时有=120个六位数.第二类：个位数排5，此时为完成这件事（构造出六位数）还应分两步，第一步排首位，有4种排法，第二步排中间四位，有种排法，故第二类共有种排法，以上两类排法都符合题目要求，所以共可组成120+96=216个.

单项选择题 B型题

小于6个月的婴儿，诊断为发育性髋脱位。治疗宜采取（）

A.全麻下手法闭合复位，髋人字石膏固定

B.股骨近端旋转截骨术

C.髋关节支具固定

D.SALTer骨盆旋转截骨术

E.髋臼成形术

完形填空

Once there was a very brilliant, creative and educated man. He gained much 36  while traveling throughout the world. 37 , he lost his legs and left arm in a tragic accident, leaving only a finger and thumb on his right hand. He became so depressed(沮丧的）that he was afraid he would spend his life 38  and would no longer be able to use his life in a(n)   39  way.
One day, he remembered how he had always loved getting 40 . He realized that he still had partial   41 of his right hand and could write with 42 . Then, he had an idea. “Why not write to other people who need encouragement?”
He 43 where he could find those who could be encouraged if they read his letters. He thought of people in 44 . Many of them had hope of regaining their 45 . Others would keep feeling depressed and remain put away for the rest of their lives. He decided that he must try to 46 them. So he wrote to a prison ministry about sending letters to the prisoners. The prison minister replied that writing to the prisoners would be 47 . However, it would be against prison rules for the prisoners to write back.
48 with the intention, the man began sending 49 messages of God’s love, hope, strength, and encouragement. He wrote twice a week, testing his strength and ability to the limit. He poured his heart and soul 50 his words, 51  his experience, sense of humor, optimism, and faith.
It was difficult to write those letters, especially without hope of any  52 . Frequently, he felt discouraged, wondering if anyone 53 read his letters. However, this was his 54   chance，so he determined to continue.
At last, he received a letter from the prison officer, which said, “Please write on the best paper you can afford. Your letters are passed from cell (牢房) to cell until they almost fall to   55 !”
We all have unique experiences, abilities and talents. We can discover ways to reach others in need of encouragement and strength.

A．Unfortunately	B．Fortunately
C．Surprisingly	D．Unbelievably

C．comfortable

A．keep in touch with	B．get in touch with
C．defend	D．know