题目

Only a few years and you'll be an adult!It's true that in two years I'll be 18,and that will make me legally an adult.But it's also just a number.It doesn't come with a magical moment where you know all the stuff adults are supposed to know how to do.It doesn't make responsibilities easier.It just makes it legal for you to enter online sweepstakes and work at Walmart（沃尔玛）.You can start being a grown up long before then or long after. This thought all started hack in July when my friend,Dakota,officially flew out for military basic training in Oklahoma.He's 17.He can't rent a 小明同学家住5楼．一天，他提着装有30个鸡蛋的塑料袋从1楼走到家里大约用时1min，在此过程中，下列估算不合理的是（ ）A．他爬楼做的功约为6×103JB．他爬楼做功的功率约为1×103WC．他提鸡蛋的力做的功约为200JD．他提鸡蛋的力做功的功率约为3W