首页
登录
职称英语
To preserve food, the growth of bacteria (细菌) must be controlled. Water, war
To preserve food, the growth of bacteria (细菌) must be controlled. Water, war
游客
2024-07-03
25
管理
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 in the ground.
Cooking will usually kill bacteria if the temperature is high enough and 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 cat vegetables, salt be came a needed part of their life. Salt helps to preserve food because it slows or stops bacteria growth. Other chemicals besides salt are used in preserving foot. Some people oppose the use of chemicals in food. They say that these chemicals may harm people if the chemicals can harm bacteria. [br] Many people are against the use of chemicals to preserve food because .
选项
A、chemicals are not necessary for preserving food
B、a small quantity of bacteria in food is good to the body
C、those chemicals that kill bacteria may not be good to people
D、there are other better ways to preserve food
答案
C
解析
根据题干中的关键词against the use of chemicals定位到文章末段末尾两句Some people oppose the use of chemicals in food. They say that these chemicals may harm people if the chemicals can harm bacteria、可知,许多人反对使用化学物质来保存食物。他们认为化学物质既然能杀死细菌,也就有可能对人体有害。由此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.答案选C.
转载请注明原文地址:https://tihaiku.com/zcyy/3661719.html
相关试题推荐
Apersonisgenerallybelievedtoachievepersonalgrowthwhen______.[br]70.
Apersonisgenerallybelievedtoachievepersonalgrowthwhen______.[br]Whe
Apersonisgenerallybelievedtoachievepersonalgrowthwhen______.[br]In
Therearetwobasicwaystoseegrowth:oneasaproduct,theotherasaproc
Topreservefood,thegrowthofbacteria(细菌)mustbecontrolled.Water,war
Topreservefood,thegrowthofbacteria(细菌)mustbecontrolled.Water,war
Topreservefood,thegrowthofbacteria(细菌)mustbecontrolled.Water,war
ThegreatmansawthebirthofSaudiArabiaandobserveditsgrowthanddevelopm
AnewreportoftheUnitedNationsshowsthat,ifthepresentgrowthrateof
Therapidgrowthofcellphoneusersleadssomescientiststocalltheuseofce
随机试题
Whatisthepurposeofthecall?[br][originaltext]ThismessageisforReenaS
Wateristheoldestformoftransportation.Theoriginalsailingvesselswer
Disasterstruck250millionyearsago,whentheworstdevastationintheeart
Yesterdaymyauntboughtsomenew______forherflatattheseaside.A、furnitur
MostAmericansconsiderthemselvesfriendlypeople.(1)______inthesouthern
[originaltext]M:Remember,youpromisedtohelpmewithmyhomeworkforEnglish
血小板计数是研究B.止血和凝血障碍的重要指标 C.毛细血管壁完整性指标 D.
易引起冠脉痉挛、心肌缺血的药物是A.阿霉素 B.环磷酰胺 C.氟尿嘧啶 D
治疗三叉神经痛的首选药物为A.糖皮质激素类 B.苯妥英钠 C.神经营养药
进入施工船舶的封闭处所作业的安全规定有()。A.施工船舶应配备必要的通风器材、
最新回复
(
0
)