首页
登录
职称英语
[originaltext] From the beginning of human history, people have used oils fr
[originaltext] From the beginning of human history, people have used oils fr
游客
2024-01-27
50
管理
问题
From the beginning of human history, people have used oils from seeds and nuts. Most of the time these oils are used as food, especially in cooking. But sometimes they have other uses. For example, oils are found in paint and in cleaning products, like soap. Oil is separated from seeds by using pressure. A machine called a press is often used. Sometimes it is surprising to learn how much oil the seeds contain. Sesame, cotton and sunflower seeds, for example, all contain at least 50% oil. Soybean is an important seed around the world, but it is only 20% oil. So chemicals are needed to release oil from soybeans. The first step in pressing the oil from seeds is to crush the seeds between two stones. A cloth container or bag is filled with the crushed seeds. Then the bag is hung up. Some of the oil will flow out of the bag and can be collected. But some oil will remain in the crushed seeds inside the bag. The easiest way to get the rest of the oil out is to place heavy rocks on the crushed material. Oil can also be collected with small, hand-operated machines. Small presses are important in areas where electricity or gasoline cannot be used. They are also a good way to test if a local market for oil exists.
19. What use of oil is NOT mentioned in the postage?
20. How much oil does soybean contain?
21. Which of the following is the best title for the passage?
选项
A、Cooking.
B、Cleaning.
C、Skin care.
D、Painting.
答案
C
解析
短文第2句开始谈植物油的用处,提到了cooking,paint和cleaning products,只有C项未提及,因而它就是答案。
转载请注明原文地址:http://tihaiku.com/zcyy/3398534.html
相关试题推荐
[originaltext]Asmoreandmorepeoplelosetheirjobs,nowisperhapsthet
[originaltext]Asmoreandmorepeoplelosetheirjobs,nowisperhapsthet
[originaltext]Forgoodorbad,computersarenowpartofourdailylives.W
[originaltext]Forgoodorbad,computersarenowpartofourdailylives.W
[originaltext]Forgoodorbad,computersarenowpartofourdailylives.W
[originaltext]Forgoodorbad,computersarenowpartofourdailylives.W
[originaltext]PresidentBushspokeonthefirstanniversaryofthechangeo
[originaltext]PresidentBushspokeonthefirstanniversaryofthechangeo
[originaltext]PresidentBushspokeonthefirstanniversaryofthechangeo
[originaltext]Savingmoneyisafirststeptowardwealth.Puttingmoneyawa
随机试题
Itisevidentthatshehasdoneagoodjob.A、这是明显的,她做得不错。B、很明显她做了一份体面的工作。C、她显然
Aristotledefinedafriendas"asinglesouldwellingintwobodies".Member
以经济合作为重点,逐步拓展全方位合作。[br][audioFiles]2018m8x/audio_etrktsj_201807_073[/audioFil
Thiseventisofgreat(significant)______inhuman’shistory.significance本题测试的
JusticeisoneofthemostpopularcoursesinHarvard’shistory.Nearlyone
服务改进验证过程中,()负责监督服务改进计划的执行情况,并根据执行结果和检
下列各项中,( )不属于质押合同的内容。A.债务人履行债务的期限 B.质押担
(一)资料 王某因违章驾驶,被公安机关处以15日拘留并处以1000元的罚款。王
美国哲学家柯亨和阿拉托,将现代社会一分为三:一方面把市民社会同一个由党派、政治
教师应具备哪些特殊能力?
最新回复
(
0
)