题目

补全对话 A.Do you like strawberries？ B.Good morning. C.Let's go. D.Yes. E.No， she doesn't. Bob：Hi, Joy！Good morning. Joy：Hi, Bob！1.______ Bob：Are you going shopping （购物）? Joy：2.______ I want to buy （买） some strawberries. Bob：3.______ Joy：Yes, I do. Bob：Does your mum like them, too? Joy：4.______ But my dad likes them. Bob：May I go with you? Joy：Yes.5.______在如图所示的电路中，要使两灯串联，只能闭合开关S2S2；要使两灯并联，应闭合开关S1、S3S1、S3，断开S2S2．若同时闭合开关S2、S3S2、S3，会造成短路，这是不允许的．