题目

如图5所示，要使两灯并联，正确的连接方法是 A. a与b相连                B. c与d相连 C. a与b相连，c与d相连    D. a与b相连, b与c相连   答案：C—Does Miss Yang speak English well? —Yes. She has no trouble          the people from English-speaking countries. A．understand        B．understanding      C．to understand      D．understood