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
Our ape-men forefathers had no obvious natural weapons in the struggle for survival in the open. They had neither the powerful t
Our ape-men forefathers had no obvious natural weapons in the struggle for survival in the open. They had neither the powerful t
admin
2012-02-18
61
问题
Our ape-men forefathers had no obvious natural weapons in the struggle for survival in the open. They had neither the powerful teeth nor the strong claws of the big cats. They could not【1】with the bear, whose strength, speed and claws【2】an impressive "smallfire" weaponry. They could not even defend themselves【3】running swiftly like the horses, zebras or small animals. If the ape-men had attempted to compete on those terms in the open, they would have been【4】to failure and extinction. But they were【5】with enormous concealed advantages of a kind not possessed by any of their competitors.
In the search【6】the pickings of the forest, the ape-men had【7】efficient stereoscopic vision and a sense of colour that the animals of the grasslands did not possess. The ability to see clearly at close range permitted the ape-men to study practical problems in a way that lay far【8】the reach of the original inhabitants of the grassland. Good longdistance sight was【9】another matter. Lack of long-distance vision had not been a problem for forest-dwelling apes and monkeys because the higher the viewpoint, the greater the range of sight so【10】they had had to do was climb a tree. Out in the open, however, this simple solution was not【11】Climbing a hill would have helped, but in many piaces the ground was flat. The ape-men【12】the only possible solution. They reared up as high as possible on their hind limbs and began to walk upright.
This vital change of physical position brought about considerable disadvantages. It was extremely unstable and it meant that the already slow ape-men became slower still.【13】they persevered and their bone structure gradually became【14】to the new, unstable position that【15】them the name Homo erectus, upright man.
选项
A、available
B、enough
C、sufficient
D、convenient
答案
B
解析
从空前的however表示的转折意义可知句子表否定。A、D可从词义上排除。enough为常用词,除表示“足以满足需要的”外,还含有“数量很多使人感到心满意足的”之意;sufficient用于正式文体,侧重指“分量或数量充分的”。显然,B项更加合适。
转载请注明原文地址:https://kaotiyun.com/show/K2nO777K
0
考博英语
相关试题推荐
BritishPrimeMinisterTonyBlairpromisedtheelectoratethatgunswouldnotbefiredwithoutanattempttowinafurtherU.N.
"Before,weweretooblacktobewhite.Now,we’retoowhitetobeblack."Hadija,oneofSouthAfrica’s3.5mColoured(mixedra
Workersinthiscountryaregettinghigherwageswhileturningoutpoorproductsthatdonot______thetestofinternationalco
Thepracticeofcapitalpunishmentisasoldasgovernmentitself.Formostofhistory,ithasnotbeenconsideredcontroversia
(As)secretaryoftransportation,heworkedtohelpthe(bankruptrailroads)inthenortheastern(UnitedStates)(solved)their
Restrainedfromtheslave-trade—thefavoritetrafficofthechiefs—A(opposedin)theirmaraudingpropensity,andthreatenedbyt
Meanwhile,theUSandIsraelregardIranasaroguestatethatseedstoexportterror,buildnuclearweaponsand______theMiddle
ItseemsincredibletomethatLatinisnottaughtinschoolsasamatterofcourse,especiallyinacountrythatisforeverlam
Theteacher______fromhercustomandgaveusnohomeworkyesterday.
Tomcouldhardly______hisexcitementasheknewthathehadmadearealdiscovery.
随机试题
男,10个月,因阵发性哭闹、呕吐、果酱样大便来诊。初步为急性肠套叠。护理评估中最有意义的客观资料是
根据《建设工程安全生产管理条例》规定,实行施工总承包的建设工程发生施工生产安全事故后,应由()向当地安全生产监督管理部门报告。
关于路基工程石方施工安全要点的说法错误的是()。
当组成部分注册会计师基于集团审计目的对组成部分财务信息执行相关工作时,()。
“需要层次论”认为,人的最高需要是()。
成功摘掉“雾都”帽子的伦敦,是许多人心目中治理空气知耻而后勇的_________。但60年后,伦敦的境况并不乐观,空气难达标,欧盟屡警告,这似乎也昭示着空气治理从来不是_________的事情,也提醒着我国治理之路的漫长。填入画横线部分最恰当的一项是:
设随机变量X和Y相互独立,都在(一a,a)上服从均匀分布,求Z=XY的概率密度。
设f(x)连续,且f(x)一2∫0xf(x—t)dt=ex,则f(x)=_______.
奈奎斯特定理描述了有限带宽、无噪声信道的最大数据传输速率与信道带宽的关系。对于二进制数据,若信道带宽B=3000Hz,则最大数据传输速率为______。
在窗口中直接键入?HOUR({^2003-01-0204:59:23PM}),则结果为______。
最新回复
(
0
)