小学PEP英语六年级下册第三单元
题目
小学PEP英语六年级下册第三单元
不规则的过去式单词
如:go to a park---went to a park
答案
Lrregular Verbs1 be was/were been 29 lose lost lost2 become became become 30 make made made3 begin began begun 31 mean meant meant4 bite bit bitten 32 meet met met5 break broke broken 33 put put put6 ...
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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