1.Scientists have already made robots walk and dance.(变为否定句)
题目
1.Scientists have already made robots walk and dance.(变为否定句)
Scientists ______ _____ robots walk and dance ______.
2.There are many famous predictions.The predictions never came true.(合并为一句)
There are many famous predictions _______ never ______ ______.
谢谢——痛哭流涕——鞠躬
答案
haven't made, yet
which, came true
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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