“定庵”是近代一位著名作家的别号，这位作家是（）。
A.龚自珍
B.李宝嘉
C.黄小配
D.张维屏
参考答案：A
以铜、硝酸、硝酸银、水、空气为原料，可用多种方法制取硝酸铜。
（1）列举4种方法，用化学方程式表示？
（2）从环境保护和经济效益角度考虑，制取大量的硝酸铜最宜采用以上哪种方法，并说明原因。
Every painting she ______ to her country, which was her will. [ ]
A. had been contributed
B. had to be contributed
C. had contribute
D. had was contributed
