若下列各项图中地图的图幅大小相同，比例尺由小到大排列正确的是（　　）

①世界地图②中国地图③河北地图④石家庄地图．

功率大小的三种比较方法：

（1）在相同时间内，比较做功的多少，做功越____ 的物体，功率越大；

（2）在完成相同功的条件下比较所用时间的长短，所用时间越____ 的物体，功率越大；

（3）做功的多少和所用时间都不同的情况下，通过公式 ____ 进行比较。

B

    I'm David. Long ago I came to the city near my hometown to find a job. I met all kinds of difficulties and I used up all my money soon.

    It was dark outside one day. I got on a bus quietly. Suddenly, a passenger cried in a loud voice, "someone has stolen my money!" I felt nervous, because his money was in my hand. Some people suggested the driver drive the bus to the police station, but some were against it because they were in a hurry to go back home. The whole bus was very noisy. The driver then stopped the bus by the roadside and turned on the lights. At that time, one passenger said, "Turn off the lights and give the thief(小简)a chance to take out the money."Then the bus got dark.

    When I was still thinking about whether to take out the money or not, the lights were turned on again. There was no money on the floor. Someone said, "Give him one more chance." Then the lights were turned off again. I became even more nervous. The lights were turned on again but they got the same result.

    Then the passengers fell into an open discussion. Later, someone said, "Give him the last chance!" I felt awakened(醒悟的) and took out all the money when the lights were turned off again.

    For many years I have been grateful to those who gave me three chances. When the first and Second chances come, you may not be prepared well or don't have enough courage to act. When the third chance comes, you should know clearly what you should do.

根据短文内容，选择最佳选项。

阅读文言文，回答问题

唐雎不辱使命

       秦王怫然怒，谓唐雎曰：“公亦尝闻天子之怒乎？”唐雎对曰：“臣未尝闻也。”秦王曰：“天子之怒，伏尸百万，流血千里。”唐雎曰：“大王尝闻布衣之怒乎？”秦王曰：“布衣之怒，亦免冠徒跣，以头抢地耳。”唐雎曰：“此庸夫之怒也，非士之怒也。夫专诸之刺王僚也，彗星袭月；聂政之刺韩傀也，白虹贯日；要离之刺庆忌也，仓鹰击于殿上。此三子者，皆布衣之士也，怀怒未发，休祲降于天，与臣而将四矣。若士必怒，伏尸二人，流血五步，天下缟素，今日是也。”挺剑而起。

       秦王色挠，长跪而谢之曰：“先生坐！何至于此！寡人谕矣：夫韩、魏灭亡，而安陵以五十里之地存者，徒以有先生也。”