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 (66) Unfortunately the changes of any animal become a fossil are not very great, and (67) t
How to Get Preserved as a Fossil (66) Unfortunately the changes of any animal become a fossil are not very great, and (67) t
admin
2012-05-18
71
问题
How to Get Preserved as a Fossil
(66)
Unfortunately the changes of any animal become a fossil are not very great, and
(67)
the chances of a fossil then being discovered many thousand of years later are even less.
(68)
It is not surprising that all the millions of animals that have lived in the past,
(69)
we actually have fossils of only very few
.
(70)
There are several ways into which animals and plants may become fossilized.
(71)
First, it is essential that the remains are buried, as though dead animals and plants are quickly destroyed.
(72)
If they remain exposed the air.
Plants rot, while insects and hyenas eat the flesh and bones of animals. (73)
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. (74)
The same chemicals change sand and silt into hard rock will also enter the animal and plant remains and make them hard too.
(75)
When this happens, we say that they become fossilized.
选项
答案
(disintegrate) in (the)
解析
转载请注明原文地址:https://kaotiyun.com/show/uGnO777K
0
考博英语
相关试题推荐
OneofFreud’sgreat______intothehumanpersonalitywasthediscoveryofhowitisinfluencedbyunconsciousprocesses.
Myworkisnotveryprofitable______money,butI’mgettingvaluableexperienceoutofit.
Differencesinpositionsadoptedbyoxygenandhydrogenatomsaccountforvariationsinthecrystallinestructureofdifferentf
Americanshadalwaysbeenpreoccupiedwithreformingtheirsociety,with"makingitover,"andbetweenthe1890sandtheendof
Massproduction,thedefiningcharacteristicoftheSecondWaveeconomy,becomesincreasinglyobsoleteasfirmsinstallinformat
David______hiscompany’ssuccesstotheunityofallthestaffandtheirperseveringhardwork.
Curiosityanddiscontentaredeephumanurgeswhichworktogetherto______allhumandiscoveryandachievements.
Giventhechoicebetweenspendinganeveningwithfriendsandtakingextratimeforhisschool-work,AndyKliseadmitshewould
Iremembermeetinghimoneeveningwithhispushcart.Ihadmanagedtosellallmypapersandwascominghomeinthesnow.Itwa
Despitehisdisappointingrecordthisyear,I______thelessfeelthatheisthebestmanwehaveinthedepartment
随机试题
T触发器的特点是:每输入一个时钟脉冲,就得到一个输出脉冲。()
女,36岁,近5年反复痰中带血或大咯血。轻咳,为少量黏液痰,无低热。胸片示:左下肺纹理增粗、紊乱呈卷发样,余未见异常。首先应考虑
A.α1受体B.α2受体C.β1受体D.β2受体E.β3受体
在进口倾销对国内产业造成实质损害的情况下,反倾销税可以追溯征收。该反倾销税可适用于下列哪些产品?
饭店、旅馆、教学楼,宜选用()探测器。
《商业银行授信工作尽职指引》对()提出了明确要求。
在系统科学发展领域,被称为“新三论”的是()。
杨丽萍的孔雀舞
[*]
Manyyoungpeoplebelievegoodgradesandexcellentinternshipswilllandthemtheiridealjob.However,contrarytowhattheyt
最新回复
(
0
)