以科学为主题的英语演讲稿
题目
以科学为主题的英语演讲稿
答案
everybody,I lovescience. Because science is very useful. Science can help people live well. Thanks to the cars, I no longer need to ride my bikes in cold winter days. My mother drives me to the school...
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
最新试题
热门考点