问题
单项选择题
一个三位数，各位上的数的和是15，百位上的数与个位上的数的差是5，如颠倒各位上的数的顺序，则所成的新数比原数的3倍少39。则这个三位数是（）.
A．196
B．348
C．267
D．429
答案
参考答案：C
解析：
设该数为100a+10b+c，根据题意有
搜题请搜索小程序“爱下问搜题”
一个三位数，各位上的数的和是15，百位上的数与个位上的数的差是5，如颠倒各位上的数的顺序，则所成的新数比原数的3倍少39。则这个三位数是（）.
A．196
B．348
C．267
D．429
参考答案：C
解析：
设该数为100a+10b+c，根据题意有
| 完形填空。 | ||||
| A man left the snow-covered street of Chicago for a vacation in Florida. His wife 1 a business trip and 2 to meet him there the next day. When he 3 his hotel, he decided to 4 his wife a quick email. He was unable to find the paper 5 which he had written her email address. He did his best to type it in from memory. Unfortunately (不幸的是) , he 6 one letter, and his note was sent directly instead to an elderly preacher's(传教士) wife whose husband had passed away only the day before. When the sad woman checked her email, she 7 a look at the monitor, let out a piercing scream (刺耳的尖叫) ,and fell to the floor 8 . At the 9 , her family rushed into the room and saw this note on the screen. "Dearest wife, I just got checked in. Everything is ready 10 your arrival tomorrow. Your loving husband." | ||||
|