配对阅读。请仔细阅读第1-5题中关于五项发明的描述,从A-G中选出与它们对应的名称,其中有两项为多余选项。( ...
问题详情:
配对阅读。
请仔细阅读第1-5题中关于五项发明的描述,从A-G中选出与它们对应的名称, 其中有两项为多余选项。
( ) is said that the first ones were made more than 2,000 years ago in China. They were made of wood and were large enough to lift a man up in the air. Following the invention of paper, the paper ones appeared and they became less expensive and more widely used.
( ) first one was built around 280 BC on the Pharos Island in the harbor (港口) of Alexandria, Egypt. Known as the Pharos of Alexandria, it was not only a useful invention but was also considered as one of the Seven Wonders of the Ancient World. It was used to guide ships to the harbor.
( ) is used to keep food fresh and cool. Before it was invented, larders (食物贮藏室) and icehouses were used to prevent food from becoming bad.
( ) was invented by Alexander Graham Bell. But he grew to dislike this invention because he thought it interrupted (打扰) his scientific research. He refused to have one in his office.
( )'s used to detect smoke and is an indicator (指示器) of fire. Although it was invented in the 1830s, it wasn't until the 1960s that most people could have enough money to have one. Since then, it has saved many lives.
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【回答】
1F 2D 3B 4C 5E
知识点:其他
题型:未分类
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下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水...
问题详情:下列与实验相关的叙述正确的是 A.稀释浓硫*时,应将蒸馏水沿烧杯内壁缓慢地注入浓硫*中B.配制溶液时,若加水超过容量瓶刻度,应用胶头滴管将多余溶液吸出C.配制1mol·L-1300mLNaCl溶液可以选择一个50mL的容量瓶和一个250mL的容量瓶D.可以用右图装置进行*气的...
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设复数(是虚数单位),则复数的虚部为( )A. B. C. ...
问题详情:设复数(是虚数单位),则复数的虚部为( )A. B. C. D.【回答】B知识点:数系的扩充与复数的引入题型:选择题...
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(1)观察下图,请将下列国家的英文字母代号填入答题卡图中对应的方框内。早期殖*家:A.葡萄牙 B.英国(2)...
问题详情:(1)观察下图,请将下列国家的英文字母代号填入答题卡图中对应的方框内。早期殖*家:A.葡萄牙 B.英国(2)仔细观察该图,据图指出奴隶贸易的主要集运地的分布特点。【回答】 (1)上框B,下框A。(2)主要分布在非洲西海岸和东海岸。知识点:血腥的资本积累题型:综合题...
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一个质量为4kg的物体静止在足够大的光滑水平地面上.从t=0开始,物体受到一个大小和方向周期*变化的水平力F作...
问题详情:一个质量为4kg的物体静止在足够大的光滑水平地面上.从t=0开始,物体受到一个大小和方向周期*变化的水平力F作用,力F的变化规律如图所示.则( )A.t=2s时物体沿负方向运动的位移最大B.t=4s时物体运动的位移达最小值C.每个周期内物体的速度变化为一定值D.从t=0开...
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