
六年级科学食物保存法复习

Quiz
•
Science
•
1st - 12th Grade
•
Medium
LEE Moe
Used 82+ times
FREE Resource
29 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
上述食物变质后会出现哪些特征?
发出难闻的气味、质地变硬
颜色会改变、发出难闻的气味
外皮变得干瘪、长出白色斑点
发出臭味、长出绿色的斑点
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
为什么以煮沸或高温处理的食物只可以保存较短的时间?
所使用的温度只能让微生物变得不活跃
所使用的温度只能杀灭食物表面上的微生物
当食物的温度恢复到室温时,微生物会重新生长
当食物的温度恢复到室温时,微生物能再从食物中获取所需的养分
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
为什么这条鱼会有臭味?
鱼肉被存放太久
鱼对空气产生反应
细菌和真菌在鱼肉中滋生
鱼肉被涂上有强烈气味的酱汁
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
嘉胜进行了一项实验以研究食物的变质。他把四种食物放在桌上,然后每天进行观察。哪种食物最快变质?
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
小辰把牛奶盒子剪开时,发现牛奶已变质。以下哪项是牛奶已变质的特征?
P 失去弹性
Q 出现泡沫
R 出现块状物质
S 发出腥味
P & Q
R & S
P & S
Q & R
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
哪项是以上食物能保存更久的原理?
高温处理食物
去除食物中的水分
抽出袋里的空气
让食物之间没有空隙
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
图中显示阿力夫正准备把鱼熏制,其主要目的是什么?
使鱼熟透
使鱼脱水
增加鱼的鲜味
去除鱼的腥味
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