题干

2004年美国圣路易斯大学研制了一种新型的乙醇电池,它用磺酸类质子溶剂,在200oC左右时供电,乙醇电池比甲醇电池效率高出32倍且更安全。电池总反应为:C2H5OH +3O2 ==2CO2 +3H2O,电池示意如右图,

下列说法不正确的是(   )

A:a极为电池的负极

B:电池工作时电流由b极沿导线经灯泡再到a极

C:电池正极的电极反应为:4H+ + O2 + 4e = 2H2O

D:电池工作时,1mol乙醇被氧化时就有6mol电子转移

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答案(点此获取答案解析)

D

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短文概写

    Why do people like what they like? Scientists have taken on the task of solving this mystery(奥秘)for ages. In the 1960s, psychologist Robert Zajonc conducted a series of experiments where he showed people nonsense words and random shapes. Afterward he asked his subjects which they preferred out of ever thing they had been shown. In study after study, people always chose the words and shapes they had seen the most. Their preference was for familiarity.

    This discovery was one of the most important findings in modern psychology. But the preference for familiarity has clear limits. People get tired of even their favorite songs and movies. On one hand, humans seek familiarity, because it makes them feel safe. On the other hand, people love the thrill of something new. This change between familiarity and discovery affects ns all the time- not just our preferences for pictures and songs, but also our preferences for ideas and even people.

    For that reason, the power of familiarity seems to be strongest when a person isn't expecting it. The opposite is also true: A surprise seems to work best when it contains some familiarity. Nobody knows this better than Raymond Loews, who is considered to be the "father of industrial design. He had a theory that he said could help artists sell anything to anyone. He called it MAYA --"Most Advanced Yet Acceptable""To sell something surprising, make it familiar; and to sell something familiar, make it surprising," he said.

    One of Loewy's final tasks was too add an element(要素)of familiarity to a truly new invention: NASA's first space station. Loewy's biggest contribution to the space station was that he insisted NASA install a window with a view of Earth. Today, tens of millions of people have seen this small detail in films about astronauts. It is hard to imagine a more perfect example of MAYA: a window to a new world can also show you home.