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
2023-07-09
59
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. Sovbean 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.
29. What use of oil is NOT mentioned in the passage?
30. How much oil does soybean contain?
31. 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:http://tihaiku.com/zcyy/2822081.html
相关试题推荐
[originaltext]W:Goodmorning.I’dliketoasksomequestionsaboutyourinsura
[originaltext]W:Goodmorning.I’dliketoasksomequestionsaboutyourinsura
ExchangeRates:ABriefHistoryofExchangeRatesForcenturie
ExchangeRates:ABriefHistoryofExchangeRatesForcenturie
ExchangeRates:ABriefHistoryofExchangeRatesForcenturie
ExchangeRates:ABriefHistoryofExchangeRatesForcenturie
ExchangeRates:ABriefHistoryofExchangeRatesForcenturie
Sometimes,anoldstorycouldbesomeaningfulthatpeoplecanlearnalotfrom
Sometimes,anoldstorycouldbesomeaningfulthatpeoplecanlearnalotfrom
Sometimes,anoldstorycouldbesomeaningfulthatpeoplecanlearnalotfrom
随机试题
PASSAGETWO[br]WhendidAngelsandDemonsbegintosellwell?Becauseofthesu
[img]2018m1x/ct_eyyjscm_eyyjscd_0021_201801[/img]’Diamonds’,sangMarilyn
土工合成材料常规厚度是在()压力下的厚度测定值。A.2.0kPa B.20k
位于腮腺深叶的多形性腺瘤切除方法目前常用的是A.整个摘除腮腺,不保留面神经 B
慢性主动脉瓣关闭不全,最常见的病因是A、风湿性 B、先天性 C、退行性心
()是以一篮子股票为基础资产的期权,代表性品种是交易所交易基金的期权。A.单只
助理理财规划师告诉客户在教育资金的各项来源中,属于无偿资助的是()。A:国家教育
患者,男,58岁,患肝炎已10余年,因无力、纳差、腹胀20天诊断为肝炎后肝硬化(
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
社会保险的特点包括( )。A.非盈利性 B.自愿性 C.社会公平性 D.
最新回复
(
0
)