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
Here is the story of rubber. From the earliest time it was common knowledge to the Peruvians(秘鲁人)that when a cut was made in the
Here is the story of rubber. From the earliest time it was common knowledge to the Peruvians(秘鲁人)that when a cut was made in the
admin
2010-06-30
18
问题
Here is the story of rubber. From the earliest time it was common knowledge to the Peruvians(秘鲁人)that when a cut was made in the outside skin of a rubber tree, a white liquid like milk came out, and that from 【21】______ a sticky mass of rubber might be made. This rubber is 【22】______ when warm, so that it is possible to give it any 【23】______ . The Peruvians made the 【24】______ that it was very good for keeping out the wet. Then in the early 1800’s, the Americans made use of it for the first time. First they made overshoes to 【25】______ their feet dry. Then came a certain Mr. Mackintosh, who made coats of cloth covered with natural rubber. From that day to this we have been coating cloth with rubber as Mr. Mackintosh 【26】______ , and our raincoats are still named after 【27】______ .
These first rubber overshoes and raincoats were all soft and sticky 【28】______ summer, and hard and inelastic (没有弹性的)in the winter 【29】______ it was cold. 【30】______ the rubber we have today is soft and elastic, it is very strong 【31】______ in the warmer summer and the colder winter. This was made possible by a man 【32】______ Goodyear. After many 【33】______ , he found that nitric acid(NHO3) made the rubber 【34】______ better, but it is not hard and strong enough. Then strange thing 【35】______ . A friend of his, Nicholas Hayward, had the 【36】______ in his sleep that rubber might be made hard and strong if mixed 【37】______ sulphur and put in the sun. Goodyear put this idea to the test, and saw that it did have more or less the desired 【38】______ though somewhat less than more. The only effect it had was on the outside of the rubber. 【39】______ is common knowledge now that the way to make rubber hard and strong is by heating it with sulphur. It took Goodyear four more years to find this heating method. When 【40】______ he did it, he had nothing at all. Everything of the smallest value had been used to get money, even his sons’ school-books.
【25】
选项
A、maintain
B、remain
C、keep
D、continue
答案
C
解析
从上下文看,意思为“保持”的动词才符合要求,所以选keep(选项C是最合适的。从语法上判断也合适,keep之后可出现“宾语+宾语补足语”。选项B的remain(保留)及continue(继续)搭配,其后也不能跟“宾语十宾语补足语”。
转载请注明原文地址:https://kaotiyun.com/show/7wJd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Thethreatofdiseasessuchasinfluenzaortuberculosisre-emerginginvirulentformhasbeenacommonthemeinrecentyears.T
Withunfamiliarhumanbeings,whenweacknowledgetheirhumanness,wemustavoidstaringatthem,andyetwemustalsoavoidign
Supermarketshoppershaveneverbeenmorespoiltforchoice.Butjustwhenwethoughttraditionalsystemsofselectivefarmingh
Itisgenerallyacknowledgedthatfamiliesarenownotascloseastheyusedtobe.Givepossiblereasonsandyourcommendations
YouwillhearaninterviewwithProf.JesseAusubelabouthisoptimisticattitudestowardsenvironmentalissuestoday.Asyouli
YouwillhearaninterviewwithProf.JesseAusubelabouthisoptimisticattitudestowardsenvironmentalissuestoday.Asyouli
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【C1】______readthenotestha
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【C1】______readthenotestha
Somedoctorsaretakinganunusualnewapproachtocommunicatebetterwithpatients—theyareletting【C1】______readthenotestha
Supermarketshoppershaveneverbeenmorespoiltforchoice.Butjustwhenwethoughttraditionalsystemsofselectivefarmingh
随机试题
下列关于舞弊的说法中,正确的足()。
中速齿轮传动,其圆周速度为()m/s。
下列有关建设项目中设置安全防范设施的提法中,哪项是不必要的?[2005年第37题]
甲公司为上市公司,系增值税一般纳税企业,适用的增值税税率为13%。所得税采用资产负债表债务法核算,适用的所得税税率为25%。2019年的财务会计报告于2020年4月30日经批准对外报出,2019年所得税汇算清缴于2020年4月30日完成。如无特别说明,调整
历史文化名山尤其特有的哪些价值()
要形成学生良好的品德,学校教育是“晓之以理、动之以情、持之以恒、导之以行”,这种做法相应的品德心理结构是()。
苏州建城有2500年之久,它已经_______。无怪乎七年前初次_______的时候它是那样疲劳,那样忧伤,那样强颜欢笑。失修的名胜与失修的城市,以及市民失修的心灵似乎都在_______苏州自身的存在。苏州,还是苏州吗?填入划横线部分最恰当的一项
社会主义新农村是()、政治建设、文化建设、社会建设和党的建设协调推进的新农村。
Imaginingbeingaskedtospendtwelveorsoyearsofyourlifeinasocietywhichconsistedonlyofmembersofownsex,howwoul
Kunzgaveupsoftwareengineeringmainlybecauseheearnedlessthanthoseinlaworbusinessfielddid.Manycompaniesencoura
最新回复
(
0
)