73. The underlined word“spin-offs” in Paragraph 4 probably refers to______.

　　A. survival chances

　　B. potential resources

　　C. unexpected benefits

　　D. physical possessions

　　74. What makes it possible for humans to live on other planets?

　　A. O ur genetic makeup.

　　B. Resources on the earth..

　　C. The adaptive ability of humans.

　　D. By-products in space exploration.

　　5.（2011·江苏卷）A

　　We know the famous ones—the Thomas Edisons and the Alexander Graham Bells —but what about the less famous inventors? What about the people who invented the traffic light and the windshield wiper(雨刮器)？Shouldn’t we know who they are?

　　Joan Mclean think so. In fact, Mclean, a professor of physics at Mountain University in Range, feels so strongly about this matter that she’s developed a course on the topic. In addition to learning “who”invented”what”, however, Mclean also likes her students to learn the answers to the”why” and ”how” questions. According to Mclean,”When students learn the answers to these questions, they are better prepared to recognize opportunities for inventing and more motivated to give inventing a try.”

　　So,just what is the story behind the windshield wiper? Well,Mary Anderson came up with the idea in 1902 after a visit to Mew York City.The day was cold and stormy, but Anderson still wanted to see the sights ,so she jumped aboard a streetcar. Noticing that the driver was struggling to see through the snow covering the winshield,she found herself wondering why there couldn’t be a built-in device for cleaning the window. Still wondering about this when she returned home to Birmingham, Alabama, Anderson started drafting out solutions. One of her ideas, a lever(操作杆)on the inside of a vehicle that would contrl an arm on the outside, became the first windshield wiper.

【五年高考（2011-2015）英语试题分项精解：专题23 阅读理解之科普知识类（原卷版）】相关文章：

★ 贵州省贵阳市2014高考英语（新人教版）一轮阅读训练（22）附答案

★ 2016年高考【英语】学科试题评析（四川卷）

★ 2017年高考英语二轮复习精品资料：专题14 阅读理解（押题专练）（原卷版）

★ 2017年高考英语二轮复习精品资料：专题15 完形填空（教学案）（原卷版）

★ 2017届高考英语二轮复习大题冲关秘籍阅读理解七选五：解题策略（含解析）

★ 2017年高考英语二轮复习精品资料：专题16 书面表达（教学案）（教师版）

★ 2017年高考英语二轮复习精品资料：专题15 完形填空（押题专练）（原卷版）

★ 浙江省湖州市2014高考英语阅读理解一轮（暑假）精炼（21）含答案

★ 重庆市2014高考英语阅读理解一轮（精品）训练题（1）附答案

★ 2017届高考英语二轮复习大题冲关秘籍阅读理解七选五：名校模拟（含解析）