题目

用方框中所给词的适当形式填空，每词限用一次 do, year, change, will, maybe         1. Mike, you need          your sweater today. It’s not clean.     2. In two         time, there will be two tall buildings here.     3. At weekends, I often have much homework to            .     4.           you are right and I am wrong.     5. People          carry the heavy things by themselves in the future because robots  will help them.33、在如图所示电路中，闭合开关S后，电流表A1、A2的示数分别为0.38A和0.7A，电压表的示数为4.5V．（1）灯L1和L2的连接方式是什么？（2）求灯L2中的电流I2．（3）求灯L1两端的电压U1．