首页
登录
职称英语
How to Get Preserved as a Fossil 【M1】Unfortunately the c
How to Get Preserved as a Fossil 【M1】Unfortunately the c
游客
2025-03-28
5
管理
问题
How to Get Preserved as a Fossil
【M1】
Unfortunately the changes of any animal become a fossil are not very great, and
【M2】
the chances of a fossil then being discovered many thousand of years later are even less
. 【M3】
It is not surprising that all the millions of animals that have lived in the past
. 【M4】
we actually have fossils of only very few
.
【M5】
There are several ways into which animals and plants may become fossilized
. 【M6】
First, it is essential that the remains are buried, as though dead animals and plants are quickly destroyed
【M7】
if they remain exposed the air
. Plants rot, while insects and hyenas cat the flesh and bones of animals. 【M8】
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. 【M9】
The same chemicals change sand and silt into hard rock will also enter the animal and plant remains and make them hard too
.【M10】
When this happens, we say that they become fossilized
. [br] 【M10】
选项
答案
(they)have(become)
解析
转载请注明原文地址:https://tihaiku.com/zcyy/4016505.html
相关试题推荐
HowtoGetPreservedasaFossil【M1】Unfortunatelythec
HowtoGetPreservedasaFossil【M1】Unfortunatelythec
HowtoGetPreservedasaFossil【M1】Unfortunatelythec
HowtoGetPreservedasaFossil【M1】Unfortunatelythec
HowtoGetPreservedasaFossil【M1】Unfortunatelythec
Thepreservedfoodshouldretainpalatableappearance,flavor,andtexture,asw
Unfortunately,large_______ofthepopulationinthiscountryweregenerallydist
Unfortunately,e-mailleavesmanythingstobedesired.Onlinecommunication
Honestyisthebestpolicy,astheEnglishsayinggoes.Unfortunately,hones
Honestyisthebestpolicy,astheEnglishsayinggoes.Unfortunately,honestyofte
随机试题
Dafterinterviewingbecomecommonpractice【S1】______intheUnit
Today,ifyoumadealistofthemassmediayouuse,youwouldhavetoaddn
系统阐述教育与生活、教育与社会、经验与课程、知与行、思维与教学、教育与职业、教育
下列哪项不是添加辅食的原则A.由单一到多样 B.由稀到稠 C.由粗到细 D
既能解郁安神,又能活血消肿的药是A.合欢皮 B.柏子仁 C.远志 D.香附
产单核李斯特菌在羊血琼脂上培养可出现A.宽阔的α溶血环B.放置过夜后溶血环消失C
某公司所有的销售人员都是男性,所有的文秘都是女性,所有的已婚者都是文秘,公司的总
下列关于单一供应商的说法,不正确的是()。A.采购费用低 B.采购的机动性大
刘、关、张约定各出资40万元设立甲有限公司,因刘只有20万元,遂与张约定由张为其
舒张早期奔马律发生的主要机制是A.心室舒张期后负荷过重 B.舒张期心室负荷过重
最新回复
(
0
)