下列河流中，不是发源于青藏地区的是 [ ]
A、长江
B、黄河
C、珠江
D、雅鲁藏布江
答案：C
If your homework ________ , you may watch TV for half an hour.
A．is finished
B．will be finished
C．has finished
D．will finish
车用气瓶的检验周期如何规定？
