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题目
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写出下列各词的复数
I_________him_________this___________her______watch_______child_______
photo ________diary______day________foot________book_______dress ________
tooth_______sheep______box_______strawberry_____thief_______yo-yo______
peach______sandwich______man______woman_______paper_______juice_______
water ________milk __________rice ____________tea_____________
答案
I____we_____him____them_____this______these_____her__their____watch_ __watches____child____children___
photo __photos______diary__diaries____day__days______foot____feet____book___books ____dress ___dresses_____
tooth__teeth_____sheep___sheep___box__boxes_____strawberry_strawberries ____thief___thieves____yo-yo__yo-yos____
peach__peaches____sandwich__sandwiches____man___men___woman__women__ ___paper___paper____juice__juice_____
water ___water_____milk __milk________rice ______rice______tea____tea_________
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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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