题目

    Jane’s husband died last year, leaving her three small boys. This created problems she had never faced before: severe __41__. She didn’t work and therefore she had no income. Christmas was coming, but she did not have money to buy her children any __42__. One morning she heard on the radio that the __43__ near her home would be free of charge on Christmas Eve. “That will be the best gifts for my boys,” Jane thought. It was __44__. She dressed her boys in their coats and __45__ to the park. On their way, a horse-drawn carriage pulled up and the driver asked her if she want16．在探究凸透镜成像规律的实验中，当烛焰、凸透镜、光屏位于如图所示的位置时，烛焰在光屏上呈现一个清晰放大的像．要使烛焰在光屏上呈现一个清晰缩小的像，调节的方法是（　　）A．透镜不动，蜡烛远离透镜移动，光屏靠近透镜移动B．透镜不动，蜡烛远离透镜移动，光屏远离透镜移动C．透镜不动，蜡烛靠近透镜移动，光屏远离透镜移动D．蜡烛不动，透镜不动，光屏靠近透镜移动