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
How to Get Preserved as a Fossil 【71】Unfortunately the chances of any animal become a fossil are not very great, and【72】the
How to Get Preserved as a Fossil 【71】Unfortunately the chances of any animal become a fossil are not very great, and【72】the
admin
2011-03-26
48
问题
How to Get Preserved as a Fossil
【71】
Unfortunately the chances of any animal become a fossil are not very great, and【72】the chances of a fossil then being discovered many thousand of years later are even less.【73】It is not surprising that all the millions of animals that have lived in the past【74】we actually have fossils of only very few.
【75】
There are several ways into which, animals and plants may become fossilized.【76】First, it is essential that the remains are buried, as though dead animals and plants are quickly destroyed【77】if they remain exposed the air.
Plants rot, while insects and hyenas eat the flesh and bones of animals. 【78】
Finally, the few remaining bones soon disintegrate the hot sun and pouring rain.
If buried in suitable conditions, however, animal and plant remains will be preserved. 【79】
The same chemicals change sand and silt into hard rock will aim enter the animal and plant remains and make them hard too.【80】When this happens, we say that they become fossilized.
选项
答案
exposed the air改成exposed to the air
解析
转载请注明原文地址:https://kaotiyun.com/show/TaBO777K
0
考博英语
相关试题推荐
•Lookatthechartbelow.Itshowsarestaurant’sincome,totalexpenditureandadvertisingcostsduringaneight-monthperiod.
WhySeeingisSucceedingLeeChungoftheSeattleBusinessInstituteexplainsTherearesomeexecutiveswho
Readthearticlebelowabouteducationandanswerthequestions.Foreachquestion23—28,choosethecorrectanswer.M
Readthearticlebelowaboutchangesthatahotelchainismaking.Foreachquestion(23-28)ontheoppositepage,choosethec
Thechieffunctionsofdirect-mailadvertisingaretofamiliarizeprospectivebuyerswithaproduct,itsname,itsmaker,andit
Notuntiltheadventofhistochemistrycouldtheanatomistseethroughthemicroscopewhichcellscarryspecificenzymesorgaug
Changesinthevolumeofunemploymentaregovernedbythreefundamentalforces:thegrowthofthelaborforce,theincreaseino
Itwas(andis)commontothinkthatotheranimalsareruledby"instinct"whereashumanslosttheirinstinctsandruledby"rea
Whentelevisionfirstbegantoexpand,veryfewofthepeoplewhohadbecomefamousasradiocommentators【31】effectiveontelev
Theessenceofbeliefistheestablishmentof______.Differentbeliefsaredistinguishablebythedifferentmodesofactionto
随机试题
设曲线方程为
调整铣床工作台进给丝杠、螺母,可消除()。
A型超声提供的信息是
男性,2天,胎龄34周在家中分娩。因哭声低弱,不吃奶,皮肤发绀8小时来急诊。查体:体重2050g,体温33℃,脉搏112次/分、呼吸66次/分、四肢末梢发绀,凉,双下肢及前臂皮肤发硬,双肺呼吸音粗,心脏正常。吸吮、觅食反射减弱。导致患儿出现上述表现的原因可
研究人员在大肠杆菌外面缠裹了一种叫做β氨基酯的人工合成聚合物,形成一种“细菌胶囊”。随后,将其插入抵抗肺炎球菌的蛋白质疫苗。实验证明,这种胶囊能被动或主动地瞄准一种特殊免疫细胞,它能提升人体免疫反应,具有很强的抗肺炎球菌疾病的能力。研究人员指出,这种胶囊疫
简要介绍洋务学堂的发展情况,并评析其特点。
设8086 CPU的(SS)=1178H,(SP)=0008H,(AX)=1234H,当执行一条PUSHAX指令时,(SS)=( )。
数据库应用系统中的核心问题是()。
AlltherecentnewsonAIDSisbad.ThedeathofRockHudson【1】publicconcernaboutthe【2】almosttothepointofpanic.Nowgene
Whousedtolivetogetherinanextendedfamily?
最新回复
(
0
)