AlexanderGrahamBellwasbornin1847inScotland,butwhenhewas...
问题详情:
Alexander Graham Bell was born in 1847 in Scotland, but when he was young , he always took care of his almost 61 (entire) deaf mother and he become 62 (interest) in helping deaf people,
63 led him to invent the microphone. He was 64 (curiosity) about things in his daily life. One day, when he did an experiment about telegraph, he came up with an idea 65 if sound waves could be reproduced in a moving electrical current, they could be sent along a wire. In searching to improve the telegraph, Bell invented the first telephone. Owing 66 his efforts, the telephone 67 (bring) us so much convenience since it was invented. Besides those inventions, Bell experimented with helicopter designs and flying machines, and he made great 68 (contribute) to the design of bridges. Although he is most often 69 (associate) with the invention of the telephone, he was indeed a continuing searcher after 70 ( practice )solutions to improve the quality of everybody's life.
【回答】
61.entirely 62.interested 63.which 64.curious 65.that 66.to
67.has brought/has been bringing 68.contributions 69.associated 70.practical
知识点:语法填空
题型:未分类
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对于一定量的理想气体,下列说法正确的是______。(选对一个给3分,选对两个给4分,选对3个给6分。每选错一...
问题详情:对于一定量的理想气体,下列说法正确的是______。(选对一个给3分,选对两个给4分,选对3个给6分。每选错一个扣3分,最低得分为0分) A.若气体的压强和体积都不变,其内能也一定不变 B.若气体的内能不变,其状态也一定不变 C.若气体的...
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某有机物结构简式为,下列关于该有机物的说法中不正确的是( )A.遇FeCl3溶液显紫*B.与足量的*氧化*溶...
问题详情:某有机物结构简式为,下列关于该有机物的说法中不正确的是()A.遇FeCl3溶液显紫*B.与足量的*氧化*溶液在一定条件下反应,最多消耗NaOH3molC.能发生缩聚反应和加聚反应D.1mol该有机物与溴发生加成反应,最多消耗1molBr2【回答】解析A项,有机物分子中存在*羟基,所以...
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下列反应的离子方程式正确的是( )A.在碳**镁溶液中加入足量Ca(OH)2溶液:Mg2++2HCO3-+C...
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图3-2-3中是四个图形,则下面对图形的叙述正确的个数是( )图3-2-3①线段AB与*线MN不相交 ②点...
问题详情:图3-2-3中是四个图形,则下面对图形的叙述正确的个数是( )图3-2-3①线段AB与*线MN不相交 ②点M在线段AB上③直线a与直线b不相交 ④延长线*线AB,则会通过点CA.0 B.1 C.2 D.3【回答】思路解析:“*线MN”不仅告诉我们MN是...
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