题目

选择合理的方法计算①3.6－1.41＋6.4－8.59②25×49×4③1500÷（4×15）④99÷[（27＋54）÷9]⑤99×55⑥76×38+62×76 答案：解：①3.6－1.41＋6.4－8.59 =（3.6+6.4）-（1.41+8.59） =10-10 =0； ②25×49×4 =（25×4）×49 =100×49 =4900； ③1500÷（4×15） =1500÷（15×4） =1500÷15÷4 =100÷4 =25； ④99÷[（27＋54）÷9] =99÷[27÷9+54÷9] =99÷[3+6] =99÷9 =11； ⑤99×55 =（100-1）×55 =100×55-1×55 =5500-55 =5445； ⑥76×38+62×76 =76×（38+62） =76×100 =7600。14．5 life lessons you will learn the hard wayLife is not easy when you are pursuing something worthwhile and ready to learn from the best experiences．It always takes tests and then fails us to learn anything worthwhile．Here are five life lessons which people will learn the hard way in majority of cases．It takes consistent time and effort to be an expert in any area．People usually get discouraged when it takes more time than they thought it would．At this time，people refer only to people who have already achieved what they want to do．Look at any successful person and you'll notice one thing common in all of them：they took time to learn and mastered their skill like no one else．There is no elevator to success； you have to take the stairs．You don't have to live your life in a way society wants you to．Many old beliefs are being performed these days and are followed blindly．Parents sometimes force their children to select a career they don't want because other children have selected that career．Worst of all，people follow them without even asking．There is no harm in believing in old beliefs but when you pursue them before your interest，sooner or later you'll realize that you should first do what you think is right．We don't care about the things we get easily．Take health for example．Very few people take their health seriously．They know that if their health is lost，they won't be happy，but they still eat junk food and never exercise．Why？Because they don't take their health seriously and the real reason behind that is they have got it for free．We spend thousands on cars and take care of them nicely．Imagine what would have been the price of human body if we had to pay for it？Be brave to take the road less traveled．In our whole life，we always want to follow the same path that everyone suggests，do the same thing everyone does，take the same career path everyone takes，wear the same clothes everyone wears，and hang out with the same people we work with．Why？Because we are scared to fail．But when you get bored of life，you realize that you are not meant to do what everyone does and that your destiny is different than anyone else's out there in the world．But the price we pay to realize this is high because it takes a great amount of courage to follow your own trail by listening to your heart．Break the rules sometimes．We follow rules so that things are in order and no one is disturbed unnecessarily．This is true in case of traffic and other company rules but when it comes to your life，there are rules made by people who are scared to do something apart from their routine and therefore they made rules to prevent others doing so．But when time passes by and you think you are not being directed towards your goal and these so-called rules are your biggest obstacles，BREAK THEM．Sometimes，we need to be bold and act courageously．5 life lessons you will learn the hard wayBe （71）patient to achieve success●Time-consuming tasks often bring （72）discouragement to people．●What successful people have in （73）commonis that they took time to learn and mastered their skill．Live your own life●Old beliefs have their value，but their being followed （74）blindlysometimes may make people suffer．●It is not a good idea to abandon what you are （75）interestedin for old beliefs．Never ignore the things we get easilyMost people don't （76）treasure/value/cherishwhat they get for nothing，li ke health．Take the road by listening to your heart●People are usually trying to be like someone else because they are afraid of （77）failure/failing．●You need to be （78）courageous/braveto listen to your heart before you pay a high price．Break the rules sometimes●People tend follow rules so that they can （79）avoidmaking things out of order．●When rules become （80）obstacles/barriersto your goal，you should break them boldly and courageously．