题目

Three small fish lived in the sea. When they were very young, their parents died. They had to   61   each other day after day. Finally, they grew up and   62   to swim deeper and further. One morning, the three fish were  63   to a shallow (浅) water by a big wave (浪). A small boat was taken there, too. It was hard for the fish to go back to the sea because the boat was fight in front of them. The largest fish realised that they were   64   , and said they had to find a way to leave there as fast as possible. The second largest fish   65   with his elder brother, but the 5．如图所示，用铅笔芯做成一个滑动变阻器，当铜环从铅笔芯的b端向a端滑动时，电压表示数和小灯泡亮度的变化情况是（　　）A．电压表示数变小，灯变亮B．电压表示数变大，灯变亮C．电压表示数变小，灯变暗D．电压表示数变大，灯变暗