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
Sand: as children we play on it and as adults we relax on it. It is something we complain about when it gets in our eye on a win
Sand: as children we play on it and as adults we relax on it. It is something we complain about when it gets in our eye on a win
admin
2019-08-28
41
问题
Sand: as children we play on it and as adults we relax on it. It is something we complain about when it gets in our eye on a windy beach, and praise when it is made into sand castles.
But we don’t often look at it. If we did, we would discover an account of a geological past and a history of sea life that goes back thousands and, in some cases, millions of years.
Sand covers not just seashores, but also ocean beds, deserts and mountains.
【B1】______And it is a major element in manufactured products too—concrete is largely sand, while glass is made of little else.
【B2】______ Well, it is larger than fine dust and smaller than shingle. In fact, according to the most generally accepted scheme of measurement, grains can be called sand if their diameter is greater than 0.06 of a millimetre and less than 0.6 of a millimetre.
Depending on its age and origin, a particular sand can consist of tiny stones or porous grains through which water can pass.
【B3】______They have come from the breaking down of rocks, or from the dead bodies of sea creatures, which collect on the bottom of the oceans, or even from volcanic eruptions.
【B4】______If it is a dazzling white, its grains may come from nearby coral, from crystalline quartz rocks or from gypsum, like the white sand of New Mexico. On Pacific Islands, jet black sands form from volcanic minerals. Other black beaches are magnetic and are mined for iron ore.
【B5】______It washes rock into streams and rivers and down to the sea, leaving behind softer materials. By the time it reaches the sea, the hardest rocks remain but everything else has been broken into tiny particles of 0.02 millimetre diameter or less. The largest pieces fall to the bottom quickly, while smaller particles float and settle only slowly in deeper water, which is why the sandy beach on the shoreline so often turns to mud further out.
Questions 61—65
Complete the passage with the following sentences. There are two extra sentences that you do not need to use.
A. These may have the shape of stars or spirals, their edges rough or smooth.
B. It is one of the most common substances on earth.
C. In addition, it has one vital function which you might never even notice.
D. Rain is an important force in the creation of beaches.
E. In the great slow cycle of the earth, sand that was once rock can turn to rock again.
F. What exactly is sand?
G. Colour is another clue to the origins of sand.
【B5】
选项
答案
D
解析
本段介绍的是雨水和沙子形成的关系。D句可以作为总起句。
转载请注明原文地址:https://kaotiyun.com/show/DdNK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
Iwouldbe______ifyoucouldsendmesomeinformationaboutthesummercoursesatyourschool.
Newpeaceproposals______attherecentMiddleEastconference.
MrsChoorhasmanagedthedepartmentsowellthatshe’llbegivenabigger______thansheexpects.
Oftenthesimplesteventsinoneculturecancausefrustrationwhenapersontriestodothesamethinginanotherculture.Mail
AwaveofeffortstocarryforwardtraditionalcultureissweepingChinanationwide.StartingfromhitculturalTVprogrammessu
Today,parentsare【D1】______worriedaboutthesafetyoftheirchildren,andbecauseofthis,theyarenotlettingtheirchildren
CooperationVersusCompetitionWhatiscompetition?Whatdoesitmeantocompete?Accordingtothedictionary,competition
(56)Heartfailureisadiseasethatpreventstheheartfrompumpingenoughbloodaroundthebody.Fluidcollectsinthelungs.
Thelongyearsoffoodshortageinthiscountryhavesuddenlygivenwaytoapparentabundance.Storesandshopsarechokedwith
Isuggestedthatwe______ameetingtonightbutherfacesuggestedthatnomeeting______.
随机试题
(Had)Paulreceivedeight(more)votesinthelastelection,he(wouldhavebeen)ourchairman(now).
患者男性,43岁。因发热1个月余、加重伴咳嗽、血痰2周而入院。近1月来出现不规则发热,以下午低热为多,有盗汗;近2周出现高热,渐出现咳嗽,咳血痰,经规律抗菌药物治疗无效。曾为长途车司机,有冶游史。近3年有静脉吸毒,而后逐渐消瘦,体重下降约10kg。入院体检
鲁天(男)与谢威(女)于1989年结婚,婚后二人感情不和,常为琐事争吵。谢威多次与鲁天协商离婚,均因财产处理问题无法达成一致而未成。2009年3月谢威向法院提起诉讼,要求解除与鲁天的婚姻关系。据此,请回答下列问题。如果鲁天在2009年3月谢威向法院起诉
在建设工程定额计价模式下,投标人投标报价中的间接费内容和取费标准是由(C)。
可变现净值是指在正常生产经营过程中,以预计售价减去进一步加工成本和预计销售费用以及相关税费后的净值。()
王老师制作的一个Word文档的部分截图如下图所示,两个方框处的数字表示该处()。
小数法则是一种心理偏差,是指人们将小样本中某事件的概率分布看成是总体分布,抓住问题的某个特征直接推断结果,而不考虑这种特征出现的真实概率及与特征有关的其他原因。根据上述定义,下列属于小数法则的是:
下列对类的声明,正确的是()B
Itisagenerallawinpolitics,thatthepowermosttobedistrusted,isthatwhich,possessingthegreatestforce,istheleas
Duringrecentyearswehaveheardmuchabout"race":howthisracedoescertainthingsandthatracebelievescertainthingsand
最新回复
(
0
)