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
24
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.
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
事实细节题。根据文章最后一段最后两句可知,人们反对使用化学物 质来保存食物的原因是“these chemicals may harm people”,C项是其同义转述。
转载请注明原文地址:https://jikaoti.com/ti/ibIGFFFM
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
OneoftheworkersAhasBhungthecurtainsthatChadbeenDlayingonthefloor.
ProfessorHuntington’spapergreatlyinspiredme.Accordingtohim,inapluralsociety,therewillinevitablybedifferentopin
Shespentmostoflastweek______backwardsandforwardsbetweenherhomeandthehospital.
Forthispart,youareallowedthirtyminutestowriteacompositionof120to180words.Youwritingshouldbebasedonthetitl
Themanageraskedallhismentokeephim______oftheprograms’progresswiththeforeignpartners.
()writingalettertothemanager,hedecidedtotalktohiminperson.
In1914,anapparentlyinsignificanteventinaremotepartofEasternEurope______Europeintoagreatwar.
Personalinterviewingismosteffective,whenallthepeopletobeinterviewedarelocatedinarelativelysmallgeographicalar
Themotorvehiclehaskilledanddisabledmorepeopleinitsbriefhistorythananybomborweaponeverinvented.Muchoftheblo
A、Thereissomethingwrongwiththeyogaclass.B、Thewomanhasattendedayogaclass.C、Tomhasattendedayogaclass.D、Thewo
随机试题
男孩,左肘摔伤急诊就医,小夹板外固定后,前臂高度肿胀,手部青白发凉,麻木无力,经拍X线片,诊断为左肱骨髁上骨折,若不及时处理,其最可能的后果是
关于用人单位与劳动者发生劳动争议申请劳动仲裁的说法,正确的是()。
未标明法定标志的统计调查表是非法定统计调查表。()
影响财政收入规模的主要因素有()。
何某在马路边自家院内埋设油桶,贮藏柴油数百斤自用。某日油桶因静电爆炸,导致十余人伤亡,多栋房屋和过往车辆损坏。何某的行为成立过失爆炸罪。()
按照加涅的学习结果分类法,学习者使用符号与环境相互作用的能力称为()
教学评价
辩证唯物主义认识论的首要的基本的观点是
MilkhasbecomeapopulardrinkformodemChinese,notonlyisitsnutritional(营养的)valueappreciated,itseemseventohavetak
Twentyyearsagothisweek,theBritishinventorTimBerners-Leecreatedtheworldsfirstwebpage.Itisworth【B1】______theex
最新回复
(
0
)