首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
专升本
To preserve food, the growth of bacteria (细菌) must be controlled. Water, warmth, and food are all needed for bacteria to become
To preserve food, the growth of bacteria (细菌) must be controlled. Water, warmth, and food are all needed for bacteria to become
admin
2019-03-27
120
问题
To preserve food, the growth of bacteria (细菌) must be controlled. Water, warmth, and food are all needed for bacteria to become strong and healthy. Some kinds of bacteria need air, but other kinds grow only when air is absent. Extremes of temperature, either hot or cold, can kill bacteria.
Before refrigerators were invented, freezing and cooling were limited by the cold climate. In warmer regions, food was cooled by putting it in the shade, in cold water from the well, or in pits (坑) in the ground.
Cooking will usually kill bacteria if the temperature is high enough and the high temperature lasts long enough. Certain methods of cooking remove water, and this aids in preserving food. Drying is the oldest and most common method of preserving food. Food can be dried by the sun, by heat or by combination of the two.
Salt was used by many hunting people. When people began to eat vegetables, salt became a needed part of their life. Salt helps to preserve food because it slows or stops bacteria to grow. Other chemicals besides salt are used in preserving food. Some people oppose the use of chemicals in food. They say that these chemicals may harm people if the chemicals can harm bacteria.
Why are many people against the use of chemicals to preserve food?
选项
A、Because chemicals are not necessary for preserving food.
B、Because a small quantity of bacteria in food is good for the body.
C、Because those chemicals that kill bacteria may not be good for people.
D、Because there are other better ways to preserve food.
答案
C
解析
根据最后一段最后两句“Some people oppose the use of chemicals in food.They say that these chemicals may harm people if the chemicals can harm bacteria.”可知,一些人反对使用化学物质来保存食物是因为他们认为化学物质可以消灭细菌的话,对人体也会有害。故选C。
转载请注明原文地址:https://kaotiyun.com/show/craC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Forthispart,youaresupposedtowritealetterinEnglishin100-120wordsbasedonthefollowinginformation.Rememberto
Knowledgeispower.Butthereisanotherthingwemustremember.Anintelligentmindneedsastrongbodytomakeitmostuseful.
CaraLangis13.ShelivesinBoston,Massachusetts,intheUS.LastThursday,shedidn’tgotoschool.Shewenttoworkwithhe
Knowledgeispower.Butthereisanotherthingwemustremember.Anintelligentmindneedsastrongbodytomakeitmostuseful.
Weneverneededtoaskhimforhelp,______?
Asscientistslearnmoreaboutthecausesofearthquakes,theybecomebetterabletopredictthem.Firstofall,theyknowthat
Doweneedlawsthatpreventusfromrunningriskswithourlives?Ifso,thenperhapslawsareneededprohibitingthesaleofc
Dopeopleeverywhereagreeonwhatamountainis?Thefactisthatdefinitionsvary.Everyoneadmits,forexample,thatEverest
Incommonwithmanycountries,Britainhasseriousenvironmentalproblems.In1952,morethan4,000peoplediedinLondonbecaus
DeepinsideamountainnearSweetwaterinEast.TennesseeisabodyofwaterknownastheLostSea.ItislistedbytheGuinness
随机试题
CommunitiesthroughoutNewEnglandhavebeenattemptingtoregulateshort-termrentalssincesiteslikeAirbnbtookoffinthe2
锉刀使用时不能沾油与沾水。
微分方程(1+ex)dy=yexdx的通解为____________________.
什么样的客观现象能够作为法律行为所附的条件?
下列关于自体输血的描述,错误的是
申请从事()项目施工作业的施工作业者应于开始施工作业次Et20d前向海事局提出书面申请。
公司内部控制机制,即总经理及其领导的监察稽核部对各部门和各项业务的监督控制。()
加快文件的传递,可采用()。
Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoil
Onequestionthatworriesmanyvisitorstodefensivecarry.com,awebsitedevotedtothedelightsanddifficultiesoflifewitha
最新回复
(
0
)