小雷想知道小灯的亮暗程度与什么因素有关．于是找来额定电流均小于0.6A，额定电压是2.5V的灯L1和额定电压是3.8V的灯L2，先后接在电源电压恒为6V的电路中，按照如图所示的电路开始探究．
在西亚地区不可能看到下列哪种情况（ ）
- I think Cindy is certainly the No. 1 in the speech contest.
-________. Her spoken English is not as good as Tina's.
