题目

如图所示，a、b、c、d是滑动变阻器的四个接线柱，现将其串联接入电路中，以控制灯泡的亮度，且要求当滑动触头向d滑动过程中，灯泡变亮，请将实物图连接成符合要求的电路。 答案：电路中b接线柱必须，c、d任选一个2、情景反应：搭配左右两栏的句子，组成意思通顺的对话。 1．Can you speak more slowly, please?                            A． Go along this street to the end. 2．I don’t feel well today.                                        B．Thanks, but I am full. 3．Help yourself to some dumplings.                        C．Sorry, I thought you can follow me. 4．Excuse me, how can I go to the Bank of China?    D．OK, it’s a piece of cake. 5．Can you repair my watch ?                                 E．You had better see a doctor.