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
21
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.
The method of salting food______.
选项
A、was not used in the past
B、involves the use of chemicals
C、is not liked by most people
D、is no longer used by hunter
答案
B
解析
事实细节题。根据最后一段第四句“Other chemicals besides salt are used in preserving food.”可知,用盐腌法保存食物时会使用一些化学物质。故选B。
转载请注明原文地址:https://kaotiyun.com/show/xnWC777K
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
Heknewhewaswrong,buthewouldnotadmitit,forfearoflosingface.
IcanspeakEnglishalittlebut______you.
M:Hello,Alice.【D1】______That’sabeautifulskirtyouarewearing.W:Thankyou,Mark.M:【D2】______I’dliketobuyonefor
A、questionB、emotionC、electionD、collectionA字母组合tion在A项中读[t∫n],其他选项读[∫n]。
()writingalettertothemanager,hedecidedtotalktohiminperson.
Meetingboysissometimeseasy,sometimesdifficult,butineithercase,itisonlythebeginning.Manygirlstryalltheapproa
Environmentalawarenesshardlyexistssincemostcountriesaremoreconcerned【C1】______economicdevelopment【C2】______withglobal
Thelittlemanwas______onemetrefiftyhigh.
Solittle()aboutphysicsthatthelecturewascompletelybeyondme.
A、Becausehewantedtostayconnectedwithnature.B、Becausehethoughtfarmingwasapromisingjob.C、Becausehewastiredofb
随机试题
不符合渗出液特点的是
患者,男,30岁。发热恶寒,头身疼痛,鼻塞,无汗,脉浮紧。且伴咳喘日久,咯痰稀白量多。宜选
在旁听口腔健康教育课时,高教授注意到卫生老师下面的一个说法是不正确的
A、单萜B、倍半萜C、二萜D、三萜E、四萜由2个异戊二烯单元聚合而成的是()。
以下属于危险、有害因素辨识与分析工作内容的是()。
在堤防工程的堤身填筑施工中,根据碾压试验确定()等,以保证碾压质量达到设计要求。
国家税务总局制定的税务行政处罚规章中对非经营活动和经营活动中的违法行为设定的处罚包括()。
下列属于劳动教养人员的义务的是()。
“我国发射的一颗电视广播卫星未能进入轨道”“里约奥运会中国在金牌榜屈居第二”“近日,游泳世锦赛,跳水梦之队丢金,傅园慧落后0.01秒获得银牌”“邹市明在拳王争霸赛中遗憾惨遭逆转”等消息发布后,网友纷纷留言安慰、打气,满满的正能量让人欣喜。我国体育事业取得了
SmotherLoveEverymorning,LeanneBricklandandhersisterwouldbicycletoschoolwiththesamewordsringingintheirea
最新回复
(
0
)