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
59
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
WhydidJimClarkbecomeinterestedinfoxesasachild?[br][originaltext]W:
ManyaresurprisedtolearnthatAntarctica(南极)isnearlytwicethesizeof
下列属于对票据业务的管理要求的是()。A.加强客户授信调查和统一授信管理
服用清热解毒类(牛黄解毒片)、清热泻火类(牛黄上清丸)不宜喝A.茶 B.萝卜
某建设用地使用权于2010年4月15日以出让方式取得,土地面积为200000m2
教育从产生之日起就具有了阶段性。()
与同质性团体比较,异质性团体所具有的优势有( )。A.有更高的决策质量 B.
发包人有权凭履约保证向银行或者担保公司索取保证金作为赔偿的情形不包括()。A
与自然换流变频器相比,晶闸管式强迫换流型变频器的特点,下列描述哪些是正确的?(
胎方位是指( )。A.胎儿纵轴与母体纵轴的关系 B.胎儿顶骨与母体骨盆的关系
最新回复
(
0
)