单词填空 首字母已给出
题目
单词填空 首字母已给出
1.The city is the centre of c____ of the country.
2.In m____ times,the environmental pollution has become a serious problem for human.
3.Our students need to get uesd to the r____ changing world of new technology.
4.Nowadays a growing n____ of people throughout the world are fond of learning Chinese.
答案
1.capital
2.modern
3.rapid
4.number
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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