The elephant is very .[ ]
A. new
B. big
C. long
答案：B
一节干电池两极间的电压是_______V；一台家用电冰箱正常工作时的电流值约为1000mA＝________A。
To keep healthy, most retired old people____ jogging as a regular form of exercise.
A．take up
B．make up
C．carry out
D．hold out
