王老师布置了一项研究新文化运动的作业，小明应该参考哪一旧报刊（    ）

关于重力，下列说法正确的是（   ）

已知f（x）=a（x﹣lnx）+ $\frac{2}{x}$ ﹣ $\frac{1}{x^2}$ ，a∈R．

根据短文内容，选择正确答案。
C
    Mr. Brown lives in a nice house in a small town with his wife，Mrs. Brown. From Monday to Friday he works in an office near his house. He is free on Saturdays and Sundays. He has a nice garden beside his house. He likes growing flowers and he often works in the garden on Saturdays and Sundays. The flowers are very beautiful and Mrs. Brown likes them very much. She often helps Mr. Brown.

提出“法者天下之公器，变者天下之公理”，只有实行变法才是救亡图存的唯一出路的是（    ）