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
考研
In the following article, some sentences have been removed. Choose the most suitable one from the list A—G to fit into each of t
In the following article, some sentences have been removed. Choose the most suitable one from the list A—G to fit into each of t
admin
2013-01-25
43
问题
In the following article, some sentences have been removed. Choose the most suitable one from the list A—G to fit into each of the numbered blank. There are two extra choices, which do not fit in any of the gaps. (10 points)
Long before Man lived on the Earth, there were fishes, reptiles, birds, insects, and some mammals. Although some of these animals were ancestors of kinds living today, others are now extinct, that is, they have no descendants alive now. (41)______. Very occasionally the rocks show impression of skin, so that, apart from color, we can build up a reasonably accurate picture of an animal that died millions of years ago. That kind of rock in which the remains are found tells us much about the nature of the original land, often of the plants that grew on it, and even of its climate. (42)______. Nearly all of the fossils that we know were preserved in rocks formed by water action, and most of these are of animals that lived in or near water. Thus it follows that there must be many kinds of mammals, birds, and insects of which we know nothing. (43)______. There were also crablike creatures, whose bodies were covered, with a horny substance. The body segments each had two pairs of legs, one pair for walking on the sandy bottom, the other for swimming. The head was a kind of shield with a pair of compound eyes, often with thousands of lenses. They were usually an inch or two long but some were 2 feet. (44)______. Of these, the ammonites are very interesting and important. They have a shell composed of many chambers, each representing a temporary home of the animal. As the young grew larger it grew a new chamber and sealed off the previous one. Thousands of these can be seen in the rocks on the Dorset Coast. (45)______. About 75 million years ago the Age of Reptiles was over and most of the groups died out. The mammals quickly developed, and we can trace the evolution of many familiar animals such as the elephant and horse. Many of the later mammals though now extinct, were known to primitive man and were featured by him in cave paintings and on bone carvings.
A. The shellfish have a long history in the rock and many different kinds are known
B. Nevertheless, we know a great deal about many of them because their bones and shells have been preserved in the rocks as fossils. From them we can tell their size and shape, how they walked, the kind of food they ate.
C. The first animals with true backbones were the fishes, first known in the rocks of 375 million years ago. About 300 million years ago the amphibians, the animals able to live both on land and in water, appeared. They were giant, sometimes 8 feet long, and many of them lived in the swampy pools in which our coal seam, or layer, or formed. The amphibians gave rise to the reptiles and for nearly 150 million years these were the principal forms of life on land, in the sea, and in the air.
D. The best index fossils tend to be marine creature. There animals evolved rapidly and spread over large over large areas of the world.
E. The earliest animals whose remains have been found were all very simple kinds and lived in the sea. Later forma are more complex, and among these are the sea-lilies, relations of the star-fishes, which had long arms and were attached by a long stalk to the sea bed, or to rocks.
F. When an animal dies, the body, its bones, or shell, may often be carried away by streams into lakes or the sea and there get covered up by mud. If the animal lived in the sea its body would probably sink and be covered with mud. More and more mud would fall upon it until the bones or shell become embedded and preserved.
G. Many factors can influence how fossils are preserved in rocks. Remains of an organism may be replaced by minerals, dissolved by an acidic solution to leave only their impression, or simply reduced to a more stable form.
选项
答案
A
解析
本题选择的主要根据是:下文一开始就有"Of these, ...",也就是说,空白部分应该有"some, several, many"或类似的词,答案只能是A由于文中有了"The first animals",为避免句式上的重复,作者改变句子起始的模式—这种做法很多见,因而也是考生阅读和写作中应该注意的。
转载请注明原文地址:https://kaotiyun.com/show/Iip4777K
0
考研英语一
相关试题推荐
Television—themostpervasiveandpersuasiveofmoderntechnologies,markedbyrapidchangeandgrowth—ismovingintoanewera,
Youaregoingtoreadalistofheadingsandatextaboutperiodicalsintheworld.Choosethemostsuitableheadingfromtheli
Whatdoesthewriteractuallysayaboutpronouncingforeignlanguages?Thevaluethestudentputsoncorrectspeechhabitsdepe
BlackdeaththatdroveNewtonfromhiscollegeandintoamomentousdiscovery,(1)_____Englandin1665.Astronomicalrecordsof
TheentertainmentindustryandtechnologycompanieshavebeenwarringforyearsoverthedazzlingabilityofcomputersandtheI
Everythingseemedtohavebecomeaweaponofwar.Ourenemieshad(1)_____themostfamiliarobjects(2)_____us,turnedshaving
Everythingseemedtohavebecomeaweaponofwar.Ourenemieshad(1)_____themostfamiliarobjects(2)_____us,turnedshaving
Everythingseemedtohavebecomeaweaponofwar.Ourenemieshad(1)_____themostfamiliarobjects(2)_____us,turnedshaving
Everythingseemedtohavebecomeaweaponofwar.Ourenemieshad(1)_____themostfamiliarobjects(2)_____us,turnedshaving
Inthefirstparagraph,theinternetofPradaismentionedtoWhydoesPradaignorethesalesonWeb.?
随机试题
在相对比较法中,如果认为风险事件偶尔会发生,并且能预期将来有时会发生,这种风险事件发生的概率属于()。
减少二氧化碳排放的途径主要是节能________。
下列除哪个外,均属于参与生物体组成的生物大分子
我国《民法通则》第147条规定:“中华人民共和国公民和外国人离婚适用受理案件的法院所在地法律。”下列有关这条冲突规范的表述中,哪些是正确的?
下列选项中,()可使旋风除尘器的效率降低。
某市一安居工程包括三批住宅、一所学校和一家医院,对所有的建筑单位采取公开招标的方式,由招标单位委托某招标代理机构组织招投标活动,此招标代理机构在市建设工程交易信息网及建设工程交易中心发布了招标公告,招标公告明确,当资格预审合格的投标申请人过多时,招标人按照
证券营业部应制定重大突发事件应急处理预案,定期组织自查,按规定进行演练,自查及演练情况以书面方式保存的时间不少于()年。
你与同事交往时,常用的方式是()。
VisualBasic中的控件分为3类,它们是标准控件、【】和可插入对象。
Itisnotthe"somedayIwillwinthelottery"kindofdaydream,butthekindthattapsintothehiddenpartofyourbrain.That
最新回复
(
0
)