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
To preserve food, the growth of bacteria (细菌) must be controlled. Water, warmth, and food are all needed for bacteria to become
admin
2019-03-27
41
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 refrigerators 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
根据文章第一段第一句“To preserve food,the growth of bacteria must be controlled.”可知,为了保存食物,必须控制细菌的生长,故选C。
转载请注明原文地址:https://kaotiyun.com/show/qraC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
AnnCurryisafamousnewspresenteroftheNBCNews"Today"show.Whenshewas15shehappenedtowalkintoabookstoreinher
—Haveyoubeenpaidforthepainting?—Yes,Iremember______$60forit.
Mr.Smithwasawealthyindustrialist,buthewasnotsatisfiedwithlife.Hedidnotsleepwellandhisfooddidnotagreewith
ArchimedeswasafamousGreekmathematicianandscientist.Hewasbornaround287B.C.andhediedintheyear212B.C..
Television—thatmostattractivemoderntechnology,markedbyrapidchangeandgrowth—ismovingintoanewerawhichpromisesto
Youought______thetaskthedaybeforeyesterday.
______withthesizeofthewholeearth,thehighestmountaindoesn’tseemhighatall.
Wheredocarsgettheirenergyfrom?Formostcars,theanswerispetrol.【C1】______somecarsuseelectricity.Thesecarshave【C
Mr.Smithwasawealthyindustrialist,buthewasnotsatisfiedwithlife.Hedidnotsleepwellandhisfooddidnotagreewith
随机试题
活塞式压缩机活塞环的切口形式有哪几种?
A、 B、 C、 D、 D
痔疮出血可见肺癌出血可见
下列各项中,属于行政给付的是:
在工程项目管理组织中,直接调动和安排项目活动、组织落实项目计划的阶层是()。
已知业务发生前后,流动资产都小于流动负债,则赊购原材料若干,将会()。
按照《最高人民检察院、公安部关于公安机关管辖的刑事案件立案追诉标准的规定(二)》第三十六条的规定,利用未公开信息交易案,涉嫌下列情形之一的,应予立案追诉()。Ⅰ.证券交易成交额累计达到30万元的Ⅱ.期货交易占用保证金数额累计达到20
下列房屋及建筑物中,属于房产税征税范围的是()。(2014年)
阅读文字材料。按要求回答36-40题。人的天性中有强烈的追求认知和审美的愿望,它赋予了人无限的创造力和充满生机的高尚而纯洁的情感。科学和艺术,一个是理性的,一个是感性的,它们在人类的发展史上结伴而行。科学是人类追求真理的事业,它以观察、思考、求证和
IfyouhavereallybeenstudyingEnglishforsolong,it’sabouttimeyou______abletowritelettersinEnglish.[1999]
最新回复
(
0
)