My father likes taking photos very much ,so my mother wants to buy him a c____.填空
题目
My father likes taking photos very much ,so my mother wants to buy him a c____.填空
答案
- camera 相机
My father likes taking photos very much ,so my mother wants to buy him a camera.
我的爸爸很喜欢照相,所以我的妈妈想为他买个相机
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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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