Richard found a job in a big office after he finished college. He liked to use his 1 and was good at his job. So he was often paid more than (得到的报酬多于) his workmates and he worked 2. But something was wrong with the young man a month ago. He couldn't fall 3at night. So he was always 4 in the daytime and often made mistakes. He had to go to a hospital. The doctor5and told him to buy some sleeping pills. He took them6he went to bed. Soon after that he went to sleep. Richard7 in the morning. He had a look at the clock on the wall. It was a quarter to seven. He got up and went to work after8 . As soon as he went into the office, he said to the head of the office, "Good morning, Mr Clarke! I've9had a good sleep like last night's and I'm feeling much better now!" "Skunk (混蛋)!" the head10 loudly. "We've looked for you for two days! I wanted you to do something important, but it's too late now!"

如图所示电路中，电源电压恒定，闭合开关S₁，断开S₂时，电压表的示数U₁＝4V，电流表的示数I₁＝0．1A；闭合开关S₁和S₂时，电压表的示数U₂＝6V．求：

给句子排排队。

____我叫小女儿在蜂窝旁等着，自己带着做了记号的二十只蜜蜂，走了两里多路，打开纸袋，把它们放出来。

____为了证实飞回花园的蜜蜂是我放飞的，我在它们的背上做了白色的记号。

____一天，我在我家花园的蜂窝里捉了一些蜜蜂，把它们放在纸袋里。

____那些被闷了好久的蜜蜂向四面飞散，好像在寻找回家的方向。

利用如图所示装置探究“物体的动能大小与哪些因素有关”．将小球A、B分别拉到与竖直方向成一定角度θ的位置，然后都由静止释放，当小球摆动到竖直位置时，将与静止在水平面上的木块C发生碰撞，木块都会在水平面上滑行一定距离后停止．图中的摆长L都相同，θ₁＜θ₂，球A、B的质量分别为m_A、m_B（m_A＜m_B）．