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
2024-01-28
18
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、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/3400956.html
相关试题推荐
[originaltext]CountyfairsareatraditioninNewEnglandtowns.Theyoffer
[originaltext]Inthenextfewdecades,peoplearegoingtotravelverydiff
[originaltext]Inthenextfewdecades,peoplearegoingtotravelverydiff
[originaltext]Inthenextfewdecades,peoplearegoingtotravelverydiff
[originaltext]Takecareofyourteethandyourteethwilltakecareofyou.
[originaltext]Takecareofyourteethandyourteethwilltakecareofyou.
[originaltext]Threeyearsago,PunchaMaya,herhusbandandfivechildrenl
[originaltext]Threeyearsago,PunchaMaya,herhusbandandfivechildrenl
[originaltext]Tohelpourselvesandothers,it’simportanttoknowsomethin
[originaltext]Tohelpourselvesandothers,it’simportanttoknowsomethin
随机试题
Thisarticlefocusesontheminormattersthatjobseekersoften______.A、ignore
根据生产安全事故造成的人员伤亡或者直接经济损失,工程事故分为( )。A.特别重大
埋设给水管、雨水管、污水管管线遇到矛盾时,正确的处理方法是()。A.雨水管避
女,32岁,因气候突变。感到头痛,鼻塞,体温37.2℃,自认为感冒,便服阿司匹林
筛分试验过程中过筛不彻底,将使砂的细度模数值()。 A.偏大 B.偏小
A.精神分裂B.高血压C.神经衰弱D.冠心病E.糖尿病五味子的现代应用是
根据《测绘生产困难类别细则》,地形图更新修测中,当更新修测工作量比例大于()时
可能与原发性癫痫有关的是()。A.遗传 B.外伤 C.脑部肿瘤 D.脑血
下列关于贷款质押与抵押区别的说法中,错误的是()。A.标的物的占有权是否发生转
暗挖隧道环形开挖预留核心土法施工工艺流程中,紧接在“开挖环形拱部→架立钢支撑→喷
最新回复
(
0
)