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
23
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:https://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
高等教育系统的主要层次是( )。A.初级学院 B.大学和专门学院 C.研究生
《中华人民共和国安全生产法》规定,生产经营单位特种作业人员未按照规定经专门的安全
下列属于项目管理实施规划内容的是()。A:项目概况 B:组织方案 C:技术
信息披露义务人未按照规定披露信息,或者公告的证券发行文件、定期报告、临时报告及其
A.如上图所示 B.如上图所示 C.如上图所示 D.如上图所示
根据企业生产经营过程中发生的经济业务,账务处理的主要内容有()。A.资金筹集业
根据《行政处罚法》,违法行为构成犯罪的,应当依法追究刑事责任,不得以()代
依据监管要求,我国期货公司应当设立首席风险官,建立独立的风险管理系统。()
关于控制钢筋伸长率的说法,正确的是()。A.HPB300级钢筋,冷拉伸长率
A.生化需氧量 B.复氧量 C.化学耗氧量 D.结合氧 E.溶解氧人为地
最新回复
(
0
)