Manyinventionshavehelpedimprovedourday-to-daylivesandar...

问题详情：

Many inventions have helped improved our day-to-day lives and are well remembered, for example, Alexander Graham Bell for the telephone and Thomas Alva Edison for the light bulb.

However, many other inventors’ names have been forgotten 　61　their outstanding accomplishments. For example, who was Ezra J. Warner? Back in 1858, he was the first person 　62　 (get)a patent for a can opener. Although it was effective, it was also dangerous to use and didn’t make it into households until 1870, 　63　William Lyman introduced an effective but much 　64　(safe) model. For another inventor, Suan Hibbard, her invention didn’t transform the world, but if did make　65　difference for other women inventions. She took old turkey feathers and bound　66　together to make the first feather duster. When she went to patent it in 1876, however, she had to battle in court to prove it was her idea. Eventually, Hibbard won the patent for her invention. Her fight helped other women gain 　67　 (confident) in their ideas, and their right to patent them. Alice H. Parker patented a furnace(暖气炉)that could heat individual rooms of a building at different temperatures. Both energy and money　68　(save) by Parker’s furnace, since the invention allowed people to heat only the room needed at a(n) 　69　(give)time. These inventors may not have received worldwide fame for their achievement, but their creations 　70　(certain) improved the lives of many people.

【回答】

61．despite

62．to get

63．when

64．safer

65．a

66．them

67．confidence

68．were saved

69．given

70．certainly

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