网络教育公共基础课大学英语（C）Test1PartIIReadingComprehension(30points)Passage1(continued)1．Adogfeelshappiestif,afterhehasworkedwell,.A)hegetsagoodpieceofmeatB)hegetspraisefromhismasterC)heisallowedtobebyhimselfD)heistakenforawalk解析：答案B。文章最后一般Mastersofdogswhoattackpostmancaneasilyshowthedogthatthepostmanisafriendandthatthedogdoesnotneedtotreathimasanunwantedperson.Adogisquitereadytodowhathismasterwishes.Andadogisalwayshappywhenheispraisedforunderstandingcorrectly.说狗的主人比较容易向狗表明，邮递员是朋友，不应当将他们当成不受欢迎的人。狗很乐意照主人的意愿办事，当它正确理解了主人的意思而受到嘉奖时，它自己也感到很幸福。2．Dogswhoaccompany(陪伴)blindpeoplemustlearn.A)toobeyallordersB)toobeyonlysafeordersC)nevertocross(横过)busyroadD)tocrossroadswhencommanded(命令)解析：答案B。文章首先指出Animalsperformmanyusefulandentertainingjobs.Dogsareparticularlyvaluableinguidingtheblind(atraineddogcanlearnnevertocrossabusyroadwhencarsarecoming,evenifhismastercommandhimtodoso),protectingproperty,findinglostpeople,andhuntingcriminals.在帮助盲人走路、保护财产、寻找失踪的人和搜查犯罪分子方面狗是很有用处的。在讲到为盲人引路时，受过训练的狗即使在主人发出错误讯号时，它也不会那样做。比如，主人命令它穿过交通拥挤并有车辆驶来的道路时，狗绝不会那样做。3．Whichofthefollowingshowstrainingawatchdogoftenbringaboutunexpectedresult?A)Somedogsattackguests.B)Somedogsdon’tknowthepostman.C)Somedogsjustsitandsaythere.D)Somedogswillattackthepostman.解析：答案D。文章第三段Trainingadogtobewatchdog(n.看门狗)oftenproducesunexpectedresults.somedogswillalwaysattackthepostmenwhocomestodeliverletters.Oneexplanationforthisbehavioristhatalthoughthepostmancomestothehouseoften,heneverentersthehouse.说将狗训练成看门犬时常常产生料想不到的结果，因为有些狗总是对投递信件的邮递员进行攻击。文章接着便分析为什么会发生这种事情。4．Somedogsalwaysattackthepostman,because.A)theydon’tknowthepostmanarefriendsB)thedogsarenotthewatchdogsC)thepostmanneverentersthehouseD)thedog’smastersneverwelcomethepostman解析：答案C。文章第三段提及Somedogsquicklylearnthedifferencebetweenunwantedpeopleandfriends.Thisisbecausetheirmasterswelcomefriendsandinvitethemintotheirhouses.However,somedogswillalwaysattackthepostmenwhocomestodeliverletters.Oneexplanationforthisbehavioristhatalthoughthepostmancomestothehouseoften,heneverent