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Scientists say they now have proof to support the old-fashioned advice that it’s best to sleep on a problem. They say sleep strengthens the memory and helps the brain organize the masses of information we receive each day.Lead researcher Bob Stickgold at the Harvard Medical School said, "Sleep helps us draw rules from our experiences. It’s like knowing the difference between dogs and cats, even if it’s hard to explain. "The US research team studied how well students remembered connections between words and symbols (象征), reports New Scientist. They compared how the students performed if they had had a sleep between seeing the words and having the test, and if they had not slept. They found that people were better able to remember lists of related words after a night’s sleep than after the same time spent awake during the day. They also found it easier to remember themes (主题) that the words had in common. But they forgot around one in four more themes if they had been awake. Prof. John Groeger, of Surrey University’s Sleep Research Centre, said, "People have been trying for years to find out what the purpose of sleep is, as we know that only certain parts of it have a restorative (有助恢复的) value. ""We form and store huge numbers of experiences in the head every day, and sleep seems to be the way the brain deals with it all.\ In the study by the US research team, students were asked to ().
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M: Do you believe in life after death, MaryW: Yes, sir.M: Well, then, that makes everything just fine. About an hour after you left yesterday to go to your grandfather’s funeral, he dropped in to see you. What did you suppose Mary’s grandfather did the day before().
W: Did you hear of the robbery in the bank last nightM: No, I didn’t. Which bank was robbedW: The bank in Green Street.M: How much money was lostW: No a penny was robbed.M: ReallyW: Yes, there were three robbers. One was trying to run away, but the police shot him in the leg and they arrested him.M: What about the other twoW: The other two were shot dead when they fired at the police.M: Who called the police when the bank had been robbedW: A brave security guard of the bank. How many robbers were shot dead().
My father believed that there were mysterious forces (神秘的力量) at work in the world. One day, he was lecturing me on those mysterious forces (36) suddenly the door opened, and a women entered, (37) two geese. She smiled (38) and looked frightened.Joseph, I have a very (39) problem. These dead geese, they keep shrieking (尖声叫) in such a sad voice... " (40) hearing this, my father turned pale. " (41) dead geese don’t shriek," my mother cut in."You’ll hear for yourself," replied the woman, It is impossible to (42) what I heard. My hands grew (43) and I wanted to run from the room.Father was no less (44) than I was. He jumped away from the table."Joseph, what shall I do" the woman cried." (45) I’m a poor woman. Two geese! They (46) me a fortune!"Father did not know what to answer. (47) face was growing sharper and more (48) . "I want to hear it again," she said. And so for the second and the third time, the shrieks were (49) . Nobody said anything. The woman asked, "Well, I didn’t (50) it, did I"Suddenly my mother laughed. "Did you (51) the windpipes (气管)" my mother asked."The windpipes No ...""Let me (52) ," said Mother. She took hold of one of the geese, and pulled out the windpipe. She did the same with the other one. I was surprised by my mother’s (53) . "Now, try it again. " I was (54) to hear the geese shriek, but they were dead silent."There is always (55) why dead geese shriek," said my mother. "Now go home and cook them for the meal. They won’t make a sound in your pot. \ 36().
某工程项目施工承包合同价为3200万元，工期18个月，承包合同规定： (1)发包人在开工前7天应向承包人支付合同价20%的工程预付款。 (2)工程预付款自工程开工后的第8个月起分5个月等额付款。 (3)工程进度款按月结算。工程质量保证金为承包合同价的5%，发包人从承包人每月的工程款中按比例扣留。 (4)当分项工程实际完成工程量比清单工程量增加10%以上时，超出部分的相应综合单价调整系数为0.9。 (5)规费费率3.5%，以工程量清单中分部分项工程合价为基数计算；税金率3.41%，按规定计算。 在施工过程中，发生以下事件： 事件1：在工程进度至第8个月时，施工单位按计划进度完成了200万元建安工程量，同时还完成了发包人要求增加的一项工作内容，经工程师计量后的该工作工程量为260m3，经发包人批准的综合单价为352元/m3。 事件2：施工至第14个月时，承包人向发包人提交了按原综合单价计算的该项目已完工程量结算价180万元。经工程师计量，其中某分项工程因设计变更实际完成工程量为580m3。(原清单工程量为360m3，综合单价1200元/m3)。 计算该项目工程预付款。
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