把词改成复数形式
题目
把词改成复数形式
列：man-men
tooth-
sheep-
woman-
mouse-
fish-
glass-
wolf-
sangwich-
policeman-
fridge-
baby-
radio-
fox-
farm-
factory-
ship-
thief-
knife-
stamp-
cloth-
German-
apple-
toy-
答案
tooth- teethsheep- sheepwoman- womenmouse- micefish- fishglass- glasseswolf- wolvessangwich- sangwichespoliceman- policemenfridge- fridgesbaby- babiesradio- radiosfox- foxesfarm- farmsfactory- factori...
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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