首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、To burn it on the fire to see whether it can break. B、To press it in the size of an egg. C、Add water to it to see whether it i
A、To burn it on the fire to see whether it can break. B、To press it in the size of an egg. C、Add water to it to see whether it i
admin
2013-04-08
34
问题
Clay is found almost everywhere in the world. (32) It is formed by the action of wind and water on rocks over thousands of years. The rocks change in both chemical and physical ways. Chemically, elements are added and taken away. Physically, the rocks break down into smaller and smaller pieces. After a long time, some of the rock changes to clay. (33) Clay is important because it is used around the world to make containers of all kinds. Potters add water to soften the clay. This makes it easier to form into shapes by hand or by machine. Then it is fired in an extremely hot stove. The result is a container with a hard surface that will last for many years. You can usually find good clay (34) in low areas of islands or land, especially if volcanoes helped form the land. (34) Clay often exists in fields covered with some water. The clay will be found about one meter below the ground. (34) River banks often also have clay about one meter or less under the surface. You can recognize clay (35) because it is very shiny when it is wet. You can also perform a test. Take some of the material and add enough water to it to make it seem like you are making bread. Then press it in your hand until it is about the size of an egg. It is probably clay if it holds together instead of falling apart when you stop pressing.
选项
A、To burn it on the fire to see whether it can break.
B、To press it in the size of an egg.
C、Add water to it to see whether it is shiny.
D、Take some of it in the testing machine.
答案
C
解析
题干问题是如何识别粘土。文章中的关键句为because it is very shiny when it is wet,因为粘土遇水会发亮,所以鉴别的方法是加入水。
转载请注明原文地址:https://kaotiyun.com/show/lVr7777K
0
大学英语四级
相关试题推荐
【B1】【B4】
WhowontheWorldCup1994footballgame?WhathappenedattheUnitedNations?Howdidthecriticslikethenewplay?Justwhen
Whatdoesthepassagemainlydiscuss?AccordingtoParagraph3,thearchitecturalsignificanceoftheHalledesMachineswasit
Strongemotionsareusually【B1】______nonverbally:Bygestures,bodyposture,【B2】______expression,voice,eyecontact,space,and
"Nomanisanisland,"wrotethepoetJohnDonneseveralcenturiesago.Hewas【C1】______oneofourmostdistinctive【C2】______:t
Today,Americanfilmmakersproducemovieswithfewrestraintsaboutviolence,sexualityandadultlanguage.Butthiswasnotalw
Planningisaveryimportantactivityinourlives.Itcangive【C1】______,evenexcitementorcausequitesevereheadaches.Th
A、Helphimtowritehisspeech.B、Edithisspeech.C、Timehisspeech.D、Revisehisspeech.CWhatdoesthemanaskthewomantod
A、Theyinvitedhimtoaparty.B、Theyaskedhimtomakeaspeech.C、TheygaveaspecialdinnerforhimD、Theyinvitedhiswifet
随机试题
WhentheZodiackilled,hegot______.The33-year-oldcasehashadmorethan______.
患者男,15岁,以“右侧鼻腔反复出血伴鼻塞3个月”就诊,前鼻镜检查鼻腔未见明显出血点及黏膜糜烂,以下处理正确的是
下列选项中()是企业长期使用的短期贷款。
下列关于项目投资决策的表述中,正确的是()。
Somepsychologistsmaintainthatmentalactssuchasthinkingarenotperformedinthebrainalone,butthatone’smusclesalso
WhydothecountrieslikeIranhavealotofearthquakes?
Howcanhistorymakemenwise?Historyoftenrepeatsitselfasfarce—preciselywhatmaysoonplayoutinWashington.ASWorld
BeforetheRomaninvasion,thenativeinhabitantsofBritainwere.
利用期货市场进行套期保值,有助于生产经营者()。
A、Helpdohousework.B、Bargainwiththelandlord.C、Agreetosharewithothers.D、Signatwo-yearcontract.A
最新回复
(
0
)