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 st
To preserve food, the growth of bacteria(细菌)must be controlled. Water, warmth, and food are all needed for bacteria to become st
admin
2018-01-18
32
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 bacteria need air, but other kinds grow only when air is absent. Extremes of temperature, either hot or cold, can kill bacteria. Before electric ice-boxes 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.
How can we preserve food according to the first paragraph?
选项
A、By controlling the temperature.
B、By putting food in a refrigerator.
C、By controlling the growth of bacteria.
D、By putting food in a place without air.
答案
C
解析
事实细节题。根据文章第一段首句可知,为了保存食物,必须控制细菌 的生长,所以C项为正确答案。
转载请注明原文地址:https://jikaoti.com/ti/GbIGFFFM
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Whatisexactlyalie?Isitanythingwesaywhichweknowisuntrue?Orisitsomethingmorethanthat?Forexample,supposea
Betweenabout1910and1930,newartisticmovementinEuropeanartweremakingthemselvesfeltintheUnitedStates.Americanar
Themanageraskedallhismentokeephim______oftheprograms’progresswiththeforeignpartners.
Scientistshadtofindoutmanythings【C1】______theycouldlandmen【C2】______themoon.Theyneededmore【C3】______aboutspacecon
Environmentalawarenesshardlyexistssincemostcountriesaremoreconcerned【C1】______economicdevelopment【C2】______withglobal
Withinsevenseconds,achainreactionhelpsyoustartmakingupyourmindaboutothersyoumeet.Youshowyourtruefeelings,c
Luckily,mostsheep()thefloodlastmonth.
Morethanfortythousandreaderstolduswhattheylookedforinclosefriendships,whattheyexpected【C1】______friends,whatth
Faces,likefingerprints,areunique.Didyoueverwonderhowitispossibleforustorecognizepeople?Evenaskilledwriterp
A、Whattobringforregistration.B、Wheretoattendtheclass.C、HowhecangettoFrostHall.D、Whetherhecanuseacheck.A
随机试题
A.可溶片B.含片C.舌下片D.口崩片E.肠溶片应在5分钟内全部崩解并溶化,如有1片不符合规定,应另取6片复试的是
人食用体内残留抗生素、激素的动物后易引起________。
应选用的灌肠液是灌肠完毕应嘱病人保留溶液的时间和测量体温的时间分别为
患者,男,38岁。十二指肠溃疡患者,突然呕血,面色苍白,心率118次/分,血压60/45mmHg。医嘱输血400ml。输血的主要目的是补充
患者男,72岁。1个月前因急性脑梗死致左侧肢体偏瘫入院,2周前出院。社区护士对患者进行访视,发现患者目前意识清晰,血压维持在145/95mmHg左右。左侧肢体偏瘫,右侧肢体肌力良好,皮肤弹性好。语言表达部分障碍。目前久卧床,可在床上独立进餐,现
某土石坝工程,合同总价为1800万元,合同工期为7个月,每月完成的施工产值如表2所示。该工程造价的人工费占22%,材料费占55%,施工机械使用费占8%。从本年度11月份起市场价格进行调整,其物价调整指数分别为:人工费1.20;材料费1.18;机械费1.
根据《巴塞尔新资本协议》,在信用风险评级标准法下,商业银行不得通过信用衍生工具进行信用风险缓释。()
2010年1月,甲、乙、丙、丁、戊共同投资设立鑫荣新材料有限责任公司(以下简称“鑫荣公司”),从事保温隔热高新建材的研发与生产。该公司注册资本2000万元,各股东认缴的出资比例分别为44%、32%、13%、6%、5%。其中,丙将其对大都房地产开发有限责任
1
Accordingtoapoll,around70percentofAmericankidsstopplayingorganizedsportsbytheageof13because"it’sjustnotfu
最新回复
(
0
)