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
65
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、Cooking.
B、Preventing disease.
C、Skin care.
D、Generating electricity.
答案
A
解析
短文第2句开始谈植物油的用处,提到了cooking,paint和cleaning products。由此可知,A正确。油虽然可能用于“预防疾病(即B)”和“保护皮肤(即C)”,但文中并未提及,故可排除这两项;D利用录音中的原词electricity制造干扰。
转载请注明原文地址:http://tihaiku.com/zcyy/2783891.html
相关试题推荐
[originaltext]Mensaidtheyspent13hoursaweekonhouseholddutyincludi
[originaltext]Mensaidtheyspent13hoursaweekonhouseholddutyincludi
[originaltext]Somepeoplethoughtbabieswerenotabletolearnthingsunti
[originaltext]Somepeoplethoughtbabieswerenotabletolearnthingsunti
[originaltext]W:Mr.Hiller,isthenumberofcomplaintsincreasingordecreasi
[originaltext]W:Mr.Hiller,isthenumberofcomplaintsincreasingordecreasi
[originaltext]W:Oh,Steve,you’reearly!I’mhappyyou’rehereearlytodaybec
[originaltext]W:Oh,Steve,you’reearly!I’mhappyyou’rehereearlytodaybec
[originaltext]TheBritishForeignOfficesaysthemeetingisbeingcalledf
[originaltext]TheBritishForeignOfficesaysthemeetingisbeingcalledf
随机试题
VARIATIONINTHEAMOUNTOFCAFFEINEINCOMMONBEVERAGESANDDRUGS*[img]2014m9x/
ACMEAtlanticisawell-knownandrespectedtradingcompany.Wehandleimpor
Wealwaysconvinceourselvesthatlifewillbebetterafterwegetmarried,
某单位预计从现在起连续3年年末有4万元的专项支出,为此准备存入银行一笔专项基金,
银行应当建立有效的考评管理机制,注重绩效考评的过程和质量管理,强化绩效考评执行力
心力衰竭患者的饮食,下列哪项不妥A.低盐 B.富含维生素 C.高热量 D.
《国家电网公司变电检测管理规定》规定,省检修公司变电检修班、变电运维班、电气试验
可研和初设审查阶段主要对直流电源系统设备的()进行审查、验收,并选择技术先进、性
世界上任何一个统一文明的国家,都有通用的语言、规范的文字,发达国家不用说,就是许
保温工程的保修期,自()之日起计算。A.保温工程完工 B.保温工程验收合
最新回复
(
0
)