首页
登录
职称英语
[originaltext] One of the important materials used in the construction of bu
[originaltext] One of the important materials used in the construction of bu
游客
2024-02-23
28
管理
问题
One of the important materials used in the construction of buildings and roads is cement. It is a powder made mainly from limestone and clay. Even though the ancient Egyptians and Romans used a kind of cement, it was not until 1824 that an English bricklayer developed cement strong enough for modern roads and buildings.
While the bricklayer was experimenting in his kitchen, he found that a mixture of limestone and clay that had been heated formed a substance. This substance became hard and stone-like as it cooled. When it was grounded into a fine powder, it could be stored.
When the powder was mixed with water, it made an excellent quality of cement that quickly hardened in sunlight or even under water, it made an excellent quality of cement that is used today.
选项
A、An Egyptian.
B、A Roman.
C、A British.
D、A man named Blake.
答案
C
解析
事实题。本文介绍水泥是如何发明的。通过浏览选项可知本题问的是“这个人是淮”,明白这点后,听录音时就要在相应的选项旁做好标记。古埃及人和古罗马人早就使用类似水泥的建材,但是现代人使用的水泥是1824年一个英国砖匠在厨房里发明的。参见原文,“...it was not until 1824 that an English bricklayer developed cement strong enough for modern roads and buildings.”正确答案为C。
转载请注明原文地址:https://tihaiku.com/zcyy/3476132.html
相关试题推荐
[originaltext]Manypeoplethinkofschoolsasbuildings,teachersandstude
[originaltext]Manypeoplethinkofschoolsasbuildings,teachersandstude
[originaltext]InAmerica,self-improvementisanationalpastime.Everyyea
[originaltext]M:Iseeyoustillgotallyoursuitcaseswithyoutoo.Wemusth
[originaltext]M:Iseeyoustillgotallyoursuitcaseswithyoutoo.Wemusth
[originaltext]M:Iseeyoustillgotallyoursuitcaseswithyoutoo.Wemusth
[originaltext]M:Holly,isitpossibletoborrowyournotes?I’llreturnthemt
[originaltext]W:Whatashameaboutyouraccident!Whatawaytoendyourholid
[originaltext]W:Whatashameaboutyouraccident!Whatawaytoendyourholid
[originaltext]W:Whatashameaboutyouraccident!Whatawaytoendyourholid
随机试题
[originaltext]Ouronlinecoursesareopentothepublicforimmediatelyenrolme
WhenshouldthemancheckwithStudentServicestoensurethechangeofregistra
Single-sexEducationforGirlsThreemainarguments
RoboticSurgeryStuartForbescelebratedh
19世纪70年代之前,黄金和白银作为国际支付手段和货币之间的汇率,货币价值可由金
根据行政诉讼法及《关于行政诉讼证据若干问题的规定》的精神和内容,以下有关原告在行
下列关于价值工程的说法,正确的有()。A:价值工程的核心是对产品进行功能分析
关于发行公司债券的说法正确的有( )。 Ⅰ.公司债券可以公开发行,也可以非公
某城市桥梁工程跨越既有外环道路,桥梁最大跨度35m,桥底净空18m。下部结构采用
下列药物中,哪些兼有止血功效A.枇杷叶 B.桑白皮 C.白芥子 D.黄药子
最新回复
(
0
)