发[iə][εə][uə]的单词各15个 快
题目
发[iə][εə][uə]的单词各15个 快
答案
[iə]：beer,deer,clear,dear,ear,fear,career,cheer,tear,gear,near,peer,sheer,engineer,volunteer
[εə]：air,pear,stare,stair,wear,bear,hair,rare,blare,dare,swear,fare,affair,chair,fair
[uə]：February,sure,tour,assure,poor,tourist,usually,ensure,boor,moor,dour,lure,mature,cure,fure,pure
举一反三
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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