题目

图7所示电路中，电源电压6V保持不变。只闭合开关S1，电流表示数为0.2A；再闭合开关S2，电流表示数为0.6A。则开关S2闭合前后R1消耗的电功率相差   A．3. 2W           B．1. 0W            C．1. 2W           D．2. 2W   答案：A单词拼写。结合语境，根据汉语提示用单词的适当形式填空。（1）It is a(恐怖的) thing to see one person make another suffer.（2）The (裁判员) whistled and the game began.（3）His (寒酸的) appearance creates a bad impression.（4）She likes chocolate (饼干) with white cream filling.（5）His speech was long and (令人厌恶的)．（6）We could hear the child (啜泣) in the other room.（7）She was paralysed from the (腰部) down.（8）We can (俯视) the church from our house.（9）The hotel has a (洗衣服) service.（10）Maybe we can (折中) on this.