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
2023-06-26
54
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、How to release oil from seeds.
B、How to test the local market for oil.
C、Food and oil.
D、Soybean and oil.
答案
A
解析
短文第1句指出,人类使用植物(种子)油有着漫长的历史。然后谈到植物油的用途,主要的植物油来源以及如何提取植物油,因此,本文的主题是A。从选项的高度概括性来看,本题当问文章的主旨大意。核心词是oil,然后每个选项都给出了另一个关键词:seeds,market,food,soybean。本文多处提到oil和seeds,因此不难选出答案。其他几项的关键词只是文章中的局部内容,不能充当主题。
转载请注明原文地址:http://tihaiku.com/zcyy/2784691.html
相关试题推荐
人们一边赏月,一边吃月饼。Peopleeatmooncakeswhiletheyareenjoyingthemoon.中文原句中,结构“一边……
中国人民历来是勇于探索、勇于创造、勇于革命的。TheChinesepeoplehavealwaysbeencourageousinexplora
很多人在选择车牌号码时会不惜花钱去选取他们认为吉利的数字。Manypeoplearewillingtopaymoneyfortheirlice
除了扫墓,人们还参与包括荡秋千、放风筝等各种活动。Apartfromsweepingthetombs,peoplealsotakepartin
风水(Fengshui)是一门使人与环境达到和谐的艺术,是中国哲学在环境上的反映。Fengshui,anartofharmonizingpeople
[originaltext]Sinceaunionrepresentativevisitedourcompanytoinformus
[originaltext]Whenpeoplecareforanelderlyrelative,theyoftendonotu
[originaltext]Whenpeoplecareforanelderlyrelative,theyoftendonotu
[originaltext](16)Therearemanycommonlyheldbeliefsabouteyeglassesan
[originaltext](16)Therearemanycommonlyheldbeliefsabouteyeglassesan
随机试题
______Iknowthemoneyissafe,Ishallnotworryaboutit.A、EventhoughB、Unles
Let’stakethingsastheyare.Itcan’tbehelped.A、事实就是这样。没法子了。B、我们把这些东西放在这儿吧。没
Whichtypeofrecordingisthetalkmostprobably?[br][originaltext]Hello
社会主义精神文明建设的基础工程是()A.思想政治教育 B.经济建设 C.社会
从事私募基金募集业务的人员应当参加( )。A.后续职业培训 B.行为规范培训
某校组织学生春游,学校领导怕出安全事故,便与学生家长签订“安全协议”,协议规定,
不列入存货的是( )。A.生产设备 B.库存商品 C.原材料 D.低值易
根据现行《药品经营质量管理规范》,药品零售企业中应当具备执业药师资格的人员是A.
债务人以定向增发股票方式抵偿债务的,为发行股票支付的发行费用应冲减营业外收入。(
在主体结构施工中,关于混凝土工程施工说法正确的是( )。A.后浇带施工浇筑与原
最新回复
(
0
)