测试灯的作用是（）。
参考答案：主要是用来检查电控元件电路的通断
在一道减法算式里，被减数、减数与差的和是560，差是210，被减数是______，减数是______．
Exhausted from a day's journey, the drivers _____ a motor hotel and put up there for the night. [ ]
A. knocked into
B. pulled into
C. broke into
D. forced into
