中考英语阅读理解专项练习50-30.pdf
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1、阅读理解专项练习50-30cMSG(monosodium glutamate)is a food additive(食 品添加剂J),which has been widely used by many food factories all overthe world since it appeared first in Japan in 1909.MSG is a substance that is added to some food to improve itsoriginal(原先的)taste and colour.It is used in foods aroundthe worl
2、d such as cakes,bread,frozen meats,fish andvegetables.In the beginning,people thought MSG was safe justlike salt and sugar.However,in 1968 some people reported they seemed to have badreactions(反应)to MSG after having had a meal at a restaurant.They includedheadaches and quick heartbeat(心 跳).It was al
3、so reported that MSG excited apersonJ s brain and caused his death in Japan.Scientists think that MSG may leadto many neurological disorders(神经紊乱).In mice studies done by a university,theevidence showed the mice didn,t want to eat the food including MSG.Today many food companies hide”MSG on food lab
4、els(标签)by using differentnames.If you see unatural flavoringsn,hydrolyzed protein and“spices”ina food label,you are probably seeing a hidden way to“report“MSG in a food label.Every time we have a meal in a restaurant,we always feel the food very deliciousto taste,but sometimes it is dangerous for ou
5、r health because some poisonous foodadditives have been added to the food.To protect people,s health,our governments,from central to local,are takingactions to stop factories producing poisonous food additives.41.Monosodium Glutamate is _A.a food B.an additive C.a factory D.acountry42.MSG is often u
6、sed in _.A.frozen meats B.cups C.clothes D.bookcovers43.The examples in the second paragraph tell us _.A.,the food including MSG is delicious B.people like to eat in arestaurantC.mice like eating the food including MSG 1).MSG is not safe sometimes44.If you see anatural flavoringsw whydrolyzed protei
7、n and“spices“in a foodlabel,you will know.A.you must eat the food in a hidden wayB.the food label must be hiddenC.MSG is probably added to the foodD.you must report the food to your parents45.The underlined word“substance“in the article means.A.colour B.material C.taste D.food【主旨大意】本文介绍了味精的优点和害处。41.
8、B 从短文第一句 uMSG(monosodium glutamate)is a food additive”得出答案。4 2.A 从这句话“It i s use d i n f oods around th e worl d such as cak e s,bre ad,f roze nm e ats,f i sh and ve g e tabl e s.,得出答案。4 3.D 从此句 uSci e nti sts th i nk th at MSG m ay l e ad to m any ne urol og i cal di sorde rs(神经紊乱).得出答案。4 4.C 从这一句
9、If y ou se e natural f l avori ng sw uh y drol y ze d p rote i n,and“sp i ce s”i n a f ood l abe l,y ou are p robabl y se e i ng a h i dde n way to“re p ort”MSG i n a f ood l abe l.w 得出答案。4 5.B根据句意,得知意为“物质”。AIf y ou are cy cl i ng i n f ore i g n countri e s,y ou wi l l ne e d to k now wh at th e se
10、traf f i c si g nsand si g nal s m e an.1BIKE ROUTEA si g n l i k e th i s one m e ans th at th e re i s a bi k e l ane(车道).If th e re i s such a si g n,y ou are re q ui re d to use th e bi k el ane.If th e re i s not such a si g n,y ou sh oul d ri de wi th traf f i cas f ar to th e ri g h t si de o
11、f th e road as p ossi bl e.Th i s si g nal m e ans y ou can cross th e stre e t al ong wi thp e de stri ans(行人).It h as a g re e n p i cture of a oe rson wal k i ngi nste ad of usi ng th e word“wal k”.Th i s si g nal i s th e don t wal k si g n.It i s a p i ctureof a re d h and,m e ani ng y ou sh ou
12、l d stop.Y ou sh oul d wai t to cross th e stre e tunti l th e g re e n p i cture of th e p e rson wal k i ng i s sh owi ng.Car dri ve rs and bi k e rs m ust com e to a com p l e te stopat“STOP si g ns.A“Y IELD“si g n m e ans to sl ow down and be re ady to stop.If th e re are p e de stri ans or ve h
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