布瓦洛理论代表作是（）。
参考答案：《诗的艺术》
My Chinese teacher said Wang Mei ______ Chinese than me. He asked me to learn from her.[ ]
A. did well in
B. did good at
C. did better in
D. was good at
电源进线端与外壳金属部分之间的绝缘电阻，在冷态情况下绝缘电阻不小于（）。
A、20MΩ
B、15MΩ
C、10MΩ
