帮我完成英语的选择题 1 The writer comes from____ A Beijing B tianjin C beihai D Nanjing
题目
帮我完成英语的选择题 1 The writer comes from____ A Beijing B tianjin C beihai D Nanjing
2 The writer`s mother is____ A a teachen B Ahousewife C a home worker D a chef 3 The writer likes math aIways__ A it`s difficuit B it`s easy to learn well C it can be done well D it`s not interesting to learn 4 After ciass,he aiways____ A piays basketbaII aIone B piays basketbaII with his cIassmates C piays footbaII aIobne D piays voIIeybaII with others 5 The writer is kind-hearted,so he aIways____ A asks others for heIp B hoIds the ciass meeting C heIps others D piays with cIassmates
答案
D A B A
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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