2013年6月29日《巴伦周刊》公布了2013年“最受尊敬企业”排行榜,巴菲特旗下伯克希尔·哈撒韦公司升至榜首,迪士尼、苹果、谷歌和可口可乐位居第二至第五位。中国大陆有三家公司上榜,分别为中国移动95名、中海油96名、建设银行97名。去年排名第93名的工商银行无缘入榜。《巴伦周刊》对这100家公司的评价来源于2013年4月15日起各公司的股票市值。

①帮助他人只是为了别人的需要

②帮助他人是我们内心情感的需要

③帮助他人，能体验生命的快乐

④助人不仅是付出，也是收获和快乐

    It was a hot summer day. The sun was shining brightly and all could think of was1down with a scoop of my favorite ice cream. I decided to make a quick2to the newly opened ice cream parlor (冰淇淋店) close by for a mid-day3.

    As soon as I arrived there, I 4my ice cream in a fancy cone and asked the server to5two tubs of chocolate ice cream for folks at home.

    While waiting for my take-out, I was halfway through my icy treat and was enjoying the view of the two colorfully6ice cream flavors, sitting pretty one next to the other.

    Now that my to-go order was7, I headed to the payment counter to settle the bill. Surprisingly, the cashier had forgotten to8my ice cream,9only for the two tubs.

    The next few10passed by as I11between doing what was easy—clearing the bill and moving out, and doing what was right—12 the error. I knew if I didn't bring the error in the bill to his13, my ice cream would be charged against his14.

    That moment, my decision was made and I went and told him what he had 15. He looked at me in 16 and thanked me profusely for telling the error. Had it not been for my 17telling the error, he would have been 18. The smile of relief on his face made me smile, too.

    I came out of the ice cream parlor feeling really19about myself. I knew that day how wonderful it feels to do what is right20what is easy.

下列函数在$\left(0,+\infty \right)$上单调递增的是(    )