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
2015-05-14
43
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 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为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/LsTC777K
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
Doparentsowetheirchildrenanything?Yes,theyowethemagreatdeal.(69)Oneoftheirchiefdutiesistogivetheirch
Coffeeisoneofthemostpopulardrinksthroughouttheworldtoday.Infact,accordingtosomeestimates,over30%ofalladult
Engineeringstudentsaresupposedtobeexamplesofpracticalityandrationality,butwhenitcomestomycollegeeducationIam
Thecommitteeisdiscussingtheproblemrightnow.Itwill______(hope)havebeensolvedbytheendofnextweek.
Throughouthistorygoldhasbeenimportantinhumansociety.Men【36】forit.Peoplehavesufferedgreathardshipssearching【37】it
OnthemorningofNovember18,1755,anearthquakeshookBoston,Massachusetts.JohnWinthrop,aprofessoratHarvardCollege,【3
WiththegrowthoftheinformationSuperhighway,alogicaldevelopmentinthejobsearchingprocessistheelectronicresume.El
Ifcitynoises______fromincreasing,people______shouttobeheardevenatthedinnertable20yearsfromnow.
Youthisnotamatteroftimebutamatterofself-improvement,bothphysicallyandmorally.Beingagoodyouth,oneshouldhave
Theimprovementsintechnologyhave______thepricesofcomputerconsiderablyinrecentmonths.
随机试题
Theflyoveratthecrossingonthe6thringroadisnow______construction.
简化的伯努利方程不能应用于计算
A.头低足高位,头偏向一侧B.去枕平卧位C.平卧位,头偏向一侧D.端坐位E.患侧卧位休克型肺炎病人取
A.麻疹B.风疹C.幼儿急疹D.猩红热E.肠道病毒感染退疹后有色素沉着
某孕妇,孕1产0,孕37周,诊断“中度妊娠高血压综合征”住院治疗。自诉因担心药物影响胎儿发育成长,不愿接受药物治疗,但又怕不服药会使病情加重,威胁胎儿的安全,心情矛盾。在护理中,首先应
关于房地产融资的意义说法错误的是()。
预警系统主要由()两部分组成。
由于下列原因给被拖方带来的损失,承拖方应当负赔偿责任的是( )。
甲公司持有一张由乙公司出票、经丙公司背书转让获得的银行承兑汇票。在该汇票到期后,甲公司向承兑银行提示付款时遭到拒绝,承兑银行拒付的理由是:该汇票上银行的签章是伪造的,该银行并未承兑过这张汇票。甲公司于是向丙、乙公司进行追索,丙公司声称该汇票是乙公司某业务员
在操作性条件作用理论的直接影响下,______风靡全球,成为20世纪第一次世界性的教学改革运动。
最新回复
(
0
)