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
2018-07-18
22
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.
(71)
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。根据文章末段最后两句可知,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/ZzBGFFFM
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
Personswhoareoverweightshouldwatchtheirdietcarefullyinordertolosepounds.Thebestwaytodothisistostartaweig
Youhavespentyourmoneyinsofreeandunrestrainedaway.Ithinkyou’llhaveto______yourexpensesmoreorless.
The______salaryofthestaffisabout$50.
Sarahlookedat______finishedpaintingwith______satisfaction.
Tuangou,alsocalledteambuyingorgroupbuying,isarecentlydevelopedshoppingstrategystartinginChina.Severalpeopleco
A、Shehadaheadache.B、Shehadtostayinbed.C、ShewenttolookafterJane.D、Shewenttothedancingparty.D
()tomorrow,hewouldbeabletoseetheopeningceremony.
Americansarepoundoftheirvarietyandindividuality,yettheyloveandrespectfewthingsmorethanauniform,whetheritis
JennyisAanuniversityBstudent,CandsheisanDhonestgirl.
TermsandConditionsofEmploymentThesetermsandconditionsshouldbereadbeforeyousignyourcontract.Salary:Your
随机试题
简述侵犯著作权的法律责任的概念和责任形式。
女,64岁,半年前体检测血压162/90mmHg,尿常规及肾功能正常,此后一直服用卡托普利治疗,1个月前出现夜尿多、乏力,血压190/110mmHg,尿常规:蛋白(+),肾功能:血尿素氮16mmol/L,肌酐324μmol/L,血钾3.0mmol/L。肾脏
可食用高纤维膳食的疾病是
节日彩灯的检查应符合下列规定,其中错误的是()。
关于金融现货交易和金融期货交易的比较,下列说法正确的是()。
根据下列资料,回答问题。2015年A区域粮食总产量58957万吨,比上年增加1836万吨,增长3.2%,其中,夏粮产量12995万吨,比上年增长2.8%;早稻产量3329万吨,增长1.6%;秋粮产量42633万吨,增长3.5%。2015年末,该区
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
计算机中常采用下列几种编码表示数据,其中,±0编码相同的是()。I.原码Ⅱ.反码Ⅲ.补码Ⅳ.移码
阅读下面材料,完成下列5题。甲:王实甫之词如花间美人。铺叙委婉,深得骚人之趣。极有佳句,若玉环之出浴华清,绿珠之采莲洛浦。(朱权《太和正音谱》)乙:《西厢记》的崔张故事乃千古佳传,人物也很美,无论是张生________情之美,莺莺_____
为Employee表增加一个字段“出生日期”,正确的SQL语句是
最新回复
(
0
)