首页
登录
职称英语
Several of the chemical elements were known in prehistoric【C1】______ . One o
Several of the chemical elements were known in prehistoric【C1】______ . One o
游客
2025-03-20
31
管理
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. [br] 【C1】
选项
A、times
B、schedules
C、plans
D、timing
答案
A
解析
times作为"时代"讲,可用复数形式。如ancient times(古代)。timing是名词,意思是"对时间的确定和选择"。schedule的意思是"计划,日程安排"。它与timeta—ble相近,另也有plan和arrangement的意思。本题应选A。
转载请注明原文地址:https://tihaiku.com/zcyy/4004800.html
相关试题推荐
Severalofthechemicalelementswereknowninprehistoric【C1】______.Oneo
Severalofthechemicalelementswereknowninprehistoric【C1】______.Oneo
Severalofthechemicalelementswereknowninprehistoric【C1】______.Oneo
Severalofthechemicalelementswereknowninprehistoric【C1】______.Oneo
Severalofthechemicalelementswereknowninprehistoric【C1】______.Oneo
Severalofthechemicalelementswereknowninprehistoric【C1】______.Oneo
EventhoughIhavebeentoherapartmentseveraltimesbefore,Istilldon’trem
Therehavebeenseveralclaimstohaveclonedhumansoverthepastfewyears
Therehavebeenseveralclaimstohaveclonedhumansoverthepastfewyears
Thereareseveralstepsthatcanbetaken,ofwhichthechiefoneistodemando
随机试题
[originaltext]Areyousometimesalittletiredandsleepyintheearlyafte
临床诊断贫血时,最重要的是确定贫血的()。A.原因 B.发病年龄 C.程度
张老师在中国画的绘画课上,为了让学生更清楚地掌握中国画的绘画技巧以及自己的作品还
资本资产定价模型基本假定条件中,( )意味着每个投资者都是价格接受者。A.所有投
年轻人立遗嘱?这个看起来有些荒诞的现象在如今越来越常见。年轻人立遗嘱并非出于游戏
下列关于Rho的性质说法正确的有( )。A.看涨期权的Rho是负的 B.看跌
下列关于纳税信用修复的表述中,符合税法规定的是()A.非正常户失信行为一个
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
建设工程投资中的动态投资部分包括()。A.工程建设其他费 B.设备及工、
一半径为1m的导体球作为接地极,深埋于地下,土壤的电导率γ=10^-2S/m,则
最新回复
(
0
)