首页
登录
职称英语
[originaltext] From the beginning of human history, (21)people have used oil
[originaltext] From the beginning of human history, (21)people have used oil
游客
2023-06-29
79
管理
问题
From the beginning of human history, (21)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. (19)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. (20)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 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:http://tihaiku.com/zcyy/2794483.html
相关试题推荐
[originaltext]M:Ilikethecolorofthisshirt.Doyouhavealargersize?W:
[originaltext]W:Youdon’tfeelverywell,doyou?Youlookpale.Haveyougot
[originaltext]W:Youdon’tfeelverywell,doyou?Youlookpale.Haveyougot
[originaltext]W:Youdon’tfeelverywell,doyou?Youlookpale.Haveyougot
[originaltext]M:IranintoourfriendMarkyesterdayonthestreetandhesaid
[originaltext]M:IranintoourfriendMarkyesterdayonthestreetandhesaid
[originaltext]M:IranintoourfriendMarkyesterdayonthestreetandhesaid
[originaltext]M:IranintoourfriendMarkyesterdayonthestreetandhesaid
[originaltext]M:Mum,beforeIgoout,couldyougoovertheshoppinglistand
[originaltext]M:Mum,beforeIgoout,couldyougoovertheshoppinglistand
随机试题
[img]2011q1/ct_etoeiclj_etoeiclzp_0022_201131[/img][br][originaltext](A)They
Intermsofliterature,theperiodbeforetheAmericanCivilWariscommonlyref
CompaniesAreWorkingwith
Creatingaclearmapofwheretheprojec
计划书评价内容包括过程评价、()和结局评价3个层次。A.设计评价 B.效应
共用题干 第三篇SomePeopledoNotTasteSaltL
某技术改造项目有三个互斥方案,其投资额和经营费用如下表所示: 根据以上资料
密码的阅读方向是 A.3'—5'B.5'—3'C.N端—C端D
在期权定价理论中,根据布莱克-斯科尔斯模型,决定欧式看涨期权价格的因素主要有(
(2014年)根据《环境影响评价技术导则-声环境》,公路项目声环境影响预测中使用
最新回复
(
0
)