40 percent of the respondents prefer used cars as the used car is more economical to buy and maintai
题目
40 percent of the respondents prefer used cars as the used car is more economical to buy and maintain 45 percent fancy brand news ones,because they consider it a precious possession of themselves and do not want to share it with others.3884
答案
百分之40的被调查者更喜欢二手车因为买二手车和日常维护更省钱
百分之45的人喜欢新车 因为他们认为汽车是宝贵财产 他们不喜欢用别人用过的车
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已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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