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
Several of the chemical elements were known in prehistoric【C1】______ . One of the great【C2】______ forward in civilization came w
Several of the chemical elements were known in prehistoric【C1】______ . One of the great【C2】______ forward in civilization came w
admin
2014-09-24
42
问题
Several of the chemical elements were known in prehistoric【C1】______ . One of the great【C2】______ forward in civilization came when bronze, an alloy,【C3】______ stone as the main material for tools and weapons. The iron replaced bronze. The first elements【C4】______ were those that were found free in nature or could be readily【C5】______ from their ores at relatively low temperatures. During the Middle Ages, chemistry was mostly practised by the alchemists,【C6】______ tried to turn base metals into gold, and who were interested in discovering a way of living for【C7】______ . But they discovered many important【C8】______ about the metals and some of the most easily attainable compounds. Even before the Middle Ages, people knew how to【C9】______ mercury, tin, and iron from their ores. By the time of Paracelsus, chemistry was developed largely to the effort of【C10】______ medicines.
【C5】
选项
A、separated
B、changed
C、charged
D、found
答案
A
解析
A项separated后可接from,意思是"把……从……中分离出来"。B项changed(改变)后可接from,但与本句意思不符.C项charged(收费,指控)与题意差得更远。
转载请注明原文地址:https://kaotiyun.com/show/dwWO777K
0
在职攻硕英语联考
相关试题推荐
Forthispart,youareallowed30minutestowriteacompositionofnolessthan150wordsunderthetitleof"WhyIGotoGradu
Automakersshouldnever______thequalityofproductsamidfiercecompetition.
OnSeptember13,theNewYorkCityHealthDepartmentbecamethefirstinthenationtobanthesaleofsugaredbeverageslarger
It’seasytoimaginethescenario.Afterspendingmostofouradultlifeinpaidemployment,thegoldendayarrives.Suddenlywe
TheconstructionofthisnewairportinthesouthofBeijingwill______thedevelopmentoftourism.
Atallbuildingisequippedwithseveralelevators,soitdoesn’tmatterifoneofthemisoutoforder.
Economicsoftenmissesanimportantelementofinequalitybetweenmalesandfemales:unpaidwork.Themainmeasureofeconomica
______,amanwhoexpresseshimselfeffectivelyissuretosucceedmorerapidlythanamanwhosecommandoflanguageispoor.
Theabilitytodoseveralthingsatoncehasbecomeoneofthegreatmeasuresofself-worthfor21st-centuryAmericans.Itisc
Apersonmayhaveanideaabouthimselfthatwillpreventhimfromdoinggoodwork.Hemayhavetheideaheisnotcapableofit
随机试题
试述我国《外贸法》的基本原则。
资产负债表的具体结构分为()两种。
在一笔出口业务中,付款方式采用信用证和D/P即期各半,为收汇安全,应在合同中规定()。
商业银行市场风险内部模型的定量要求有()。
毛泽东的著作中,对“实事求是”这句话作了科学解释的是()。
古人云:“不以规矩,不成方圆。”这里“规矩”的意思是:
学校西迁
virtualsecretariat
WhatisZepeto?
A、Tosavethemoneyforalongtime.B、Tobuyanewcar.C、Topurchaseausedcar.D、Togetasecondcar.B综合推断题。男士认为从长远看买新车省钱,所
最新回复
(
0
)