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【简答题】
For most city people, the elevator is an unremarkable machine that inspires none of the enthusiasm or interest that Americans afford trains, jets,and even bicycles. Dr. Christopher Wilk is a member of a small group of elevator experts who consider this a misunderstanding. Without the elevator, they point out, there could be no downtown skyscrapers or tall buildings, and city life as we know it would be impossible. In that sense, they argue,the elevator’s role in American history has been no less significant than that of cars. In fact, according to Wilk ? the car and the elevator have been locked in a “secret war” for over a century, with cars making it possible for people to spread horizontally (水平地),and elevators pushing them toward life in close groups of towering vertical (垂直的)columns. If we tend to ignore the significance of elevators, it might be because riding in them tends to be such a brief, boring, and even awkward experience^one that can involve unexpectedly meeting people with whom we have nothing in common, and an unpleasant awareness of the fact that we’re hanging from a cable in a long passage. In a new book, Lifted, German journalist and cultural studies professor Andreas Bernard directed all his attention to this experience, studying the origins of elevator and its relationship to humankind and finding that riding in an elevator has never been a totally comfortable experience. “After 150 years, we are still not used to it”, Bernard said. “We still have not exactly learned to cope with the mixture of closeness and displeasure.” That mixture, according to Bernard, sets the elevator ride apart from just about every other situation we find ourselves in as we go about our lives. Today,as the world’s urban population explodes,and cities become more crowded, taller, and more crowded, America’s total number of elevators—900,000 at last count, according to Elevator World magazine’s “2012 Vertical Transportation Industry”一are a force that’s becoming more important than ever. And for the people who really, really love them, it seems like high time that we looked seriously at just what kind of force they are. 小题1:What does the underlined word “this” in Paragraph 1 refer to? A.The general view of elevators. B.The particular interests of experts. C.The desire for a remarkable machine. D.The enthusiasm for transport vehicles. 小题2:The author’s purpose in mentioning cars is . A.to contrast their functions with elevators, B.to emphasize the importance of elevators C.to reveal their secret war against elevators D.to explain people’s preference for elevators 小题3:According to Prof. Bernard, what has made the elevator ride different from other life experiences? A.Vertical direction. B.Lack of excitement. C.Little physical space. D.Uncomfortable conditions. 小题4:The author urges readers to consider . A.the exact number of elevator lovers B.the serious future situation of elevators C.the role of elevators in city development D.the relationship between cars and elevators
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【简答题】胃肠道平滑肌的紧张性和自动节律性主要依赖于()。
【单选题】Why does an astronaut put his hand under his belt when he sleeps?
A.
Because he thinks it is comfortable to sleep in that way in space.
B.
Because he doesn't want to touch any controls when he sleeps.
C.
Because the instruments of the spaceship are easily broken.
D.
Because he is afraid that the seat will move.
【简答题】如图所示,在△ABC中,∠C=90°,BD平分∠ABC交AC于点D,过点D作DE ∥ BC交AB于点E,过点D作DF⊥AB于点F,请回答下列问题. (1)DE与BE相等吗?请说明理由; (2)判断BC,DE,EF三者的数量关系,并说明理由; (3)平行线DE,BC之间的距离与DF的长度有何数量关系,为什么?
【单选题】葡葡膜炎最常见的种类为
A.
前葡萄膜炎
B.
中间葡萄膜炎
C.
后葡萄膜炎
D.
视网膜脉络膜炎
【单选题】Why does an astronaut put his hand under his belt when he sleeps? 查看材料
A.
Because he thinks it is comfortable to sleep in that way in space.
B.
Because he doesn’t want to touch any controls when he sleeps.
C.
Because the instruments of the spaceship are easily broken.
D.
Because he is afraid that the seat will move.
【简答题】在△ABC中,∠ACB=90°,AC=BC,直线MN经过点C,且AD⊥MN于点D,BE⊥MN于点E.(1)当直线MN绕点C旋转到如图1的位置时, ①通过观察、猜想,△ADC和△CEB的关系是: ; ②猜想DE、AD、BE三者之间满足的数量关系是: ; ③请证明你的上述两个猜想. (2)当直线MN绕着点C顺时针旋转到MN与AB相交于点F(AF>BF)的位置(如图2所示)时,请直接写出下列问题的答案:...
【判断题】物流成本核算的目的是降低物流成本。
A.
正确
B.
错误
【单选题】物流成本核算的目的是( ) 。
A.
加强物流管理,提高物流效益
B.
提高企业物流成本
C.
提高产品质量
D.
加速存货周转、降低存货成本
【单选题】葡葡膜炎最常见的种类为
A.
前葡萄膜炎
B.
中间葡萄膜炎
C.
后葡萄膜炎
D.
交感性眼炎
E.
视网膜脉络膜炎
【多选题】造成大气中二氧化碳含量增加的主要原因是
A.
动植物的呼吸作用增强
B.
实验室逸出的CO 2 增多
C.
森林面积锐减
D.
大量使用化石燃料作能源
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