串联电路的电阻越多，总电阻的阻值越小，并小于各串联电阻中的任何一个电阻。
参考答案：错
The teacher asked Tom what he was going to be when he ________ up. [ ]
A. is going to grow
B. grows
C. was going to grow
D. grew
函数STR(12345.678，6，2)的结果是
A．12345
B．12345．
C．12346
D．12345.7
