如图是一个几何体从三个方向看所得到的形状图．

在如图所示的实验电路中，闭合开关，移动滑动变阻器的滑片后，发现电流表、电压表均有示数，小灯泡不亮．则故障原因是（　　）

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有位收藏家最近从古董市场上购得一座彩陶马，上面有多种颜色，主要有黄、绿、青三色，经专家鉴定是真品，你知道它是什么时候制作的（    ）

    Five months ago. I ____(happen) to be upstairs at dusk when the window was open. I didn't go downstairs until the window had to ____(shut). The dark, rainy evening, the wind and the thundering clouds held me ____(entire) in their power.

    It was the first time in one and a half ____(year) since we found shelter here that I'd seen the night face to face. Sadly I am only able to look at nature through dirty curtains ____(hang) before very dusty windows.____is no pleasure looking through them because nature is one thing____really must be experienced. One evening when it was so warm. I stayed ____(wake) on purpose until half past eleven in order to have ____good look at the moon by myself. But as the moon gave far too much light, I ____(not dare) to open the window.