新概念第四册第39课课文详解:新概念第四册第19课练习题及答案

新概念英语第4册课后习题答案: 　　Unit 19 BBCAD AABDD BC 　　新概念英语第4册课后习题: 　　Multiple choice questions 多项选择题 　　Choose the correct answers to the following questions. 　　Comprehension 理解 　　1 Giving the body a rest ____. 　　a.seems to be the main function of sleep 　　b.doesn't seem to be the main function of sleep 　　c.means that sleep must have some function 　　d.prevents muscle inactivity 　　2 Electrical activity ____. 　　a.is a good indication of the way the body rests during sleep 　　b.doesn't seem to diminish during sleep 　　c.is a plausible explanation for the function of sleep 　　d.must always be recorded during sleep 　　3 Rapid eye movements are an indication that 　　a.a person is having a disturbed sleep 　　b.sleep is very deep 　　c.that a sleeper is dreaming 　　d.that a person is drifting into sleep 　　4 One of these statements is true.Which one? 　　a.The most important function of sleep is dreaming. 　　b.Rapid eye-movement is associated with deep sleep. 　　c.People who experience rapid eye-movements show personality disorders. 　　d.When people are woken, they don't report any dreams. 　　Structure 句型 　　5 ____ have speculations gone on? ____ Forthousands of years.(11.2-3) 　　a.How many 　　b.How often 　　c.How much 　　d.How long 　　6 The bodies tissues can repair ____ . 　　a.themselves 　　b.their self 　　c.itself 　　d.them 　　7 Peculiar bursts of eye-movements ____ an individual's sleep.(1.14) 　　a.punctuate 　　b.is punctuating 　　c.are punctuating 　　d.have punctuated 　　8 People woken during these periods of eye-movements generally reported that they had beendreaming ____.(11.15-16) 　　a.for a while 　　b.during sleep 　　c.before they went to sleep 　　d.just this moment 　　Vocabulary 词汇 　　9 Speculations have been going on for thousands of years ____.(11.2-3) 　　a.so to speak 　　b.in history 　　c.and recorded 　　d.in fact 　　10 This might be a plausible ____.(11.8-9) 　　a.conclusion 　　b.deduction 　　c.philosophy 　　d.theory 　　11 The second factor is more interesting and more ____.(1.13) 　　a.obvious 　　b.basic 　　c.apparent 　　d.acceptable 　　12 Some eye-movements were slow, others ____ and rapid.(1.15) 　　a.smooth, quick 　　b.interrupted 　　c.sudden, irregular 　　d.painful, repeated

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