why are trees important (参考词语,take in carbon dioxide,oxygen,desert)
题目
why are trees important (参考词语,take in carbon dioxide,oxygen,desert)
答案
我是GROTESQUE1010：(请认真阅读,不要浪费我的写作苦心哦^@@^祝学习顺利）Trees are important because they give us two of life's essentials,food and oxygen.As we evolved,they provided additional necessitie...
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