问题
单项选择题
题2图所示电路,所有电阻均为3Ω,a、b两端的等效电阻Rab=()Ω。
A.2.5
B.3
C.1.5
D.2
答案
参考答案:D
题2图所示电路,所有电阻均为3Ω,a、b两端的等效电阻Rab=()Ω。
A.2.5
B.3
C.1.5
D.2
参考答案:D
词汇运用(10分)从方框中选择适当选项,并用其正确形式填入短文后相应题号的横线上,使短文通顺、完整,选项中有两项多余
"My friends," he said,"you have learned a valuable(有价值的) 小题7:today. No matter what I did to the $100 bill! Many小题8: in our life, we are dropped and stepped on. We feel as if we are worth nothing. But remember, no matter what小题9:happened to you, you will never lose your value.You are 小题10:valuable to those people who love you. Your value doesn’t come from what you do or whom you know, hut who you are." |