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In which stage (s) does the REM happen?
A.Stage 2
B.Stage 3 and Stage 2
C.Stage 4
D.Stage 5

A.Stage
B.Stage
C.Stage
D.Stage

【参考答案】

A
本题考查考生的语篇分析能力。考的是REM发生在睡眠的哪一阶段。文章第七段一开始提到“yougobacktoS......

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中国公民王某系一大学（所在地为地级市）教授，2012年6月取得的收入情况如下:（1）取得工资收入7600元；（2）—次性取得设计收入20000元；（13）出版专著一部，出版社支付稿酬100000元；（4）购买体育彩票中奖所得20000元；（5）领取了市政府教育奖金、教育储蓄存款利息、保险赔偿和季度奖。2012年6月王某取得的彩票中奖所得应缴纳个人所得税为（）元。

A.0
B.2450
C.3200
D.4000

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Singing Alarms Could Save the BlindIf you cannot see, you may not be able to find your way out of a burning building and that could be fatal.A company in Leeds could____ (1) all that with directional(定向的)sound alarms capable of guiding you to the exit.Sound Alert, a company run____ (2) the University of Leeds, is installing the alarms in a residential home for____ (3) people in Somerset and a resource center for the blind in CambridgE.The alarms produce a ____ (4) range of frequencies(频率)that enable the brain to____ (5) where the sound is coming from.Deborah Whittington of Sound Alert says that the alarms use most of the frequencies that can be____ (6) by humans．'It is a burst of white noise(白噪声)that people say sounds like static on the radio,' she says．'Its life-saving potential is____ (7).'She conducted an experiment in which people were filmed by thermal-imaging(热效应成像)cameras trying to find their____ (8) out of a large smoke-filled room．It____ (9)them nearly four minutes to find the door without a sound alarm, ____ (10) only 15 seconds with onE.Whittington studies how the brain ____ (11) sounds at the university．She says that the____ (12) of a wide band of frequencies can be pinpointed(精确的确定)more easily than the source of a narrow banD.Alarms____ (13) on the same concept have already been installed on emergency vehicles.The alarms will also include rising or failing frequencies to____ (14) whether people should go up or down stairs．They were____ (15) with the aid of a large grant(拨款)from British Nuclear Fuels.第 51 题A.changeB.cureC.demandD.set

A.A
B.
Sound
C.The
D.
Deborah
E.'It
F.'Its
G.'She
H.It____
I.
Whittington
J.She
K.Alarms____
L.
The
M.They
N.change
O.cure
P.demand
Q.set

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