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1、阅读理解C D篇专练20篇满分:班级：_姓名：_考号：_一、阅读理解（共20小题）1. Werewolves (狼人) arent the only creatures affected by the moons cycles（周期）A full moon also affects peoples sleep more or less, reports a Swiss team of scientistsEven people who sleep in a lab without windows could reduce their sleeping time a little once a
2、month. To test the moons influence, 33 adults of both sexes and ages of many kinds spent several nights in a sleep labAs they slept, researchers recorded their brain activity, eye movements and hormone levels (荷尔蒙水平)On nights closer to a full moon, the sleepers took an average of five minutes longer
3、 to fall asleep, and slept for 20 minutes lessIn addition, brain activity fell by 30 percent during the sleepAnd hormone levels that help control sleep cycles went downOn these nights, the sleepers complained they couldnt sleep well even though they didnt know the moons cycleOn the bright side, no s
4、leeper turned into a werewolf. The Swiss team doesnt know how the moon affects sleepThe gravity (重力) of the moon causes ocean tides（潮汐）to rise and fallBut that force is too weak to affect sleep, Gajochen saysHe believed some bodys biological clock may be affected by the moon cyclesThere may be anoth
5、er reason, says David DingesThis sleep researcher at the University Of Pennsylvania in Philadelphia says that the body clock is very sensitive（敏感的）to light at nightThose sleepers could have been affected by having too much moonlight before arriving at the lab.1The writer mentioned “werewolves” in th
6、e first paragraph to _. A.show there are the moons cycles B.attract peoples attention to the report C.introduce a creature to readers D.ask people not to sleep alone in the lab2What happened to the sleepers during the experiment on a full moon? A.They slept for about five minutes longer. B.They coul
7、d only sleep for 20 minutes. C.Their brains were not as active as they were D.They complained they were too tired to sleep.3The last paragraph is developed mainly by _. A.analyzing (分析) reasons Bexplaining differences C.making comparisons Dfollowing the time order4The passage is mainly about _. A.th
8、e sleeping problems caused by the moons cycles B.the influence of the moon on human sleeping habits C.the moons influence on sleeping and its possible reasons D.the ways to get a better sleep on a full moon night2.Imagine picking apples on Christmas or going skating on May DayWhat about going for a
9、swim on Thanksgiving? Without Leap Day(闰日）,which takes place every four years, that could happenOur calendar is normally 365 days longIt was created to match the cycles of the seasonsBut Roman ruler Julius Caesar noticed a problem: The earth doesnt circle the sun in exactly 365 daysIt actually cakes
10、 365 and one-quarter daysHe figured out that the extra part of a day would cause the calendar to grow apart from the seasons over timeOver 100 years, the seasons would shift (推移）about 24 daysSpring would start on April 13 instead of March 20Caesar used math to figure out a way to stop the calendar f
11、rom shiftingHe decided to add an extra day to the month of February every four yearsHis idea helped keep the seasons and calendar matched upEven so, it still wasnt perfecthis calendar was adding too many daysGregorian calendar, declares that every year that is equally divided by 400 is a leap yearTu
12、rn-of-the-century years, or years ending in “00”, would not be leap years unless they could be divided equally by 400These complicated equations(等式）help keep the calendar in balance with the orbit of the earthToday, we still use the Gregorian calendarIn about 3，000 years, the calendar will be only o
13、ne day out of step with the seasons, Its still not perfect, but mathematicians decided it was as close as we could get1Why was Julius Caesars calendar not good enough? ASpring would start twenty-four days later than usual BIt would be only one day out of step with the seasons CThere would be too man
14、y days on the calendar DLeap Day would take place every other year2It can be inferred from the text that _ Athe earth circles the sun in exactly 365 days BGregorian calendar is more scientific than Caesars CPopes calendar has been used for 3，000 years DCaesar added an extra day to every February3Whi
15、ch of the following years is a leap year according to Pope? AThe year 2100 BThe year 2200 CThe year 2300 DThe year 24004In which section of a website can you probably read this text? AOpinion BPolicy CEntertainment DScience3.D One of the most popular pets in the world, the Australian tree frog, is originally a native of Australia, though the pet trade has transported it far and wideIt has successfully adapted to New Zealand and the United StatesIt
