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
30
管理
问题
From the beginning of human history, people have used oils from seeds and nuts.[19]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 do we learn about the use of oil from the passage?
20. How much oil does soybean contain?
21. Which of the following is the best title for the passage?
选项
A、50%.
B、40%.
C、30%.
D、20%.
答案
D
解析
短文提到,大豆的含油量为20%,故选D。百分比作选项,难点不在猜测问题是什么类型,而在于对文中出现的每个百分比(50%和20%)做出准确的笔记。在听到问题后才能根据笔记作答。
转载请注明原文地址:https://tihaiku.com/zcyy/3400158.html
相关试题推荐
[originaltext]TimeIthinkalotabouttimeandnotjustbecauseit’sthename
[originaltext]M:MissJones,couldyoutellmemoreaboutyourfirstjobwithh
[originaltext]M:MissJones,couldyoutellmemoreaboutyourfirstjobwithh
[originaltext]M:MissJones,couldyoutellmemoreaboutyourfirstjobwithh
[originaltext]W:Gosh!Haveyouseenthis,Richard?M:Seenwhat?W:Inthepap
[originaltext]W:Gosh!Haveyouseenthis,Richard?M:Seenwhat?W:Inthepap
[originaltext]Manypeoplecatchacoldinthespringtimeorfall.Itmakesus
[originaltext]Manypeoplecatchacoldinthespringtimeorfall.Itmakesus
[originaltext]Manypeoplecatchacoldinthespringtimeorfall.Itmakesus
[originaltext]PatriciaPanianeverwantedtobeanationalpublicfigure.Alls
随机试题
A—TOPStoriesB—E-newslettersC—CurrentSpeci
Thenationsbiggestretailersreportedstrongsalesduringthelastsixmonths.
Questions1-4Thetexthas9paragraphs(A-I).Whichparagraphcontainseachof
TheInternethasbecomeacommonplaceforus.While【C1】______theInternet,we
雨水口及支管的施工质量要求之一为:雨水管端面应露出井内壁,其露出长度不得大于5c
下列哪项不是链接CAD界面后可选择的颜色显示方式?()A.彩色 B.黑白 C
粪便特征是量多,泡沫状,呈灰白色,有光泽恶臭,镜检时可见较多的脂肪小滴,最有可能
A.医学科研道德是医学科研的动力源泉 B.医学科研是有意识、有目的的,是对研究
所谓“治理”,一个很重要的方面是“建设”,这是社会治安综合治理工程的一项积极措施
法的效力层级规定了上位法与下位法的法律地位与效力,下列说法中正确的是()。A.《
最新回复
(
0
)