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At midnight, we were aroused by a knock at the door.
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The life of London is made up of many different elements.
Moderate Earthquake Strikes EnglandA moderate earthquake struck parts of southeast England on 28 April 2007, toppling chimneys from houses and rousing residents from their beds. Several thousand people were left without power in Kent County. One women suffered minor head and neck injuries."It felt as if the whole house was being slid across like a fun-fair ride," said the woman.The British Geological Survey said the 4.3-magnitude quake struck at 8:19 a.m. and was centered under the English Channel, about 8.5 miles south of Dover and near the entrance to the Channel Tunnel.Witnesses said cracks appeared in walls and chimneys collapsed across the county. Residents said the tremor had lasted for about 10 to 15 seconds."I was lying in bed and it felt as if someone had just got up from bed next to me." said Hendrick van Eck, 27, of Canterbury about 60 miles southeast of London. "I then heard the sound of cracking, and it was getting heavier and heavier. It felt as if someone was at the end of my bed hopping up and down."There are thousands of moderate quakes on this scale around the world each year, but they are rare in Britain. The April 28 quake was the strongest in Britain since 2002 when a 4.8-magnitude quake struck the central England city of Birmingham.The country"s strongest earthquake took place in the North Sea in 1931, measuring 6.1 on the Richter scale. British Geological Survey scientist Roger Musson said the quake took place on 28 April in an area that had seen several of the biggest earthquakes ever to strike Britain, including one in 1580 that caused damage in London and was felt in France. Musson predicted that it was only a matter of time before another earthquake struck this part of England. However, people should not be scared too much by this prediction, Musson said, as the modern earthquake warning system of Britain should be able to detect a forthcoming quake and announce it several hours before it takes place. This would allow time for people to evacuate and reduce damage to the minimum. During the April 28 earthquake, the whole England was left without power.
Making Light of SleepAll we have a clock located inside our brains. Similar to your bedside alarm clock, your internal clock runs on a 24-hour cycle. This cycle, called a circadian rhythm, helps control when you wake, when you eat and when you steep.Somewhere around puberty, something happens in the timing of the biological clock. The clock pushes forward, so adolescents and teenagers are unable to fall asleep as early as they used to. When your mother tells you it"s time for bed, your body may be pushing you to stay up for several hours more. And the light coming from your computer screen or TV could be pushing you to stay up even later.This shift is natural for teenagers. But staying up very late and sleeping late can get your body"s clock out of sync with the cycle of light and dark. It can also make it hard to get out of bed in the morning and may bring other problems, too. Teenagers are put in a kind of a gray cloud when they don"t get enough sleep, says Mary Carskadon, a sleep researcher at Brown University in Providence, RI. It affects their mood and their ability to think and learn.But just like your alarm clock, your internal clock can be reset. In fact, it automatically resets itself every day. How By using the light it gets through your eyes.Scientists have known for a long time that the light of day and the dark of night play important roles in setting our internal clocks. For years, researchers thought that the signals that synchronize the body"s clock were handled through the same pathways that we use to see.But recent discoveries show that the human eye has two separate light-sensing systems. One system allows us to see. The second system tells our body whether it"s day or night. According to the last two paragraphs, what did the previous researchers think about the human eye"s light-sensing system
李同学是一名五年级的学生，性格开朗，爱好看报纸、玩电脑、打篮球，很喜欢数学，成绩也很优秀。一次偶然，外语考试没考好，他很自责，老师认为该同学没认真准备考试，作为反面教材在全班同学面前批评了他。由于成绩、名次的大幅度下降，回家后家长的责骂也让李同学觉得压力很大，他希望下周的数学考试可以得到好成绩，重新获得老师和家长的认可。但是在这样的压力下数学也发挥失常考砸了，其他的科目也接二连三地没考好。面对老师和家长的批评、恨铁不成钢的态度，李同学觉得自己很失败，觉得自己各方面都很差，进而对自己丧失了信心，也变得不爱和同学交流了。 问题：针对此案例中李同学的情况，请用归因理论进行分析。
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