如图所示的锂离子电池主要利用碳的还原和氧化进行工作，比传统的镉镍电池、氢镍电池性能更优越。则下列叙述正确的是
A 充电过程中，B极被氧化
B 该电池充放电的总反应式为：LiCoO2＋C6
Li1－xCoO2＋LixC6
C 放电时A极是负极，C6X－发生氧化反应
D 放电时B极是负极， Li发生氧化反应
答案：B
根据装置图可知，充电时电子向B极移动，B极是阴极，发生还原反应，选项A不正确。放电时电子向A极移动，所以A极是正极，B极是负极，LixC6发生氧化反应，所以选项CD都是错误的，答案选B。
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| Tony loved basketball. One afternoon on his way to a basketball game, he was walking and dreaming about playing college 1 the next year. Suddenly a car hit him and he was thrown three 2 into the air. Tony woke up in a 3 room. When the doctor told him that both his legs were broken, he knew his college basketball dreams were 4 . Tony did what the doctors told him. 5 it didn't work when he left the hospital,Tony was sent to a rehab (康复) center. A week after he arrived there, he met Sunny Chen. Sunny used to be a coach. His legs were hurt 6 in a skating accident. Though he couldn't move his legs, Sunny became a coach of a basketball 7 called the Suns. It was a on-wheelchair basketball team, because 8 on the team played from a wheelchair. Sunny invited Tony to 9 the game. Tony played badly, but for the 10 time since the accident, he stopped feeling sorry for himself. After becoming a part of the Suns, Tony improved quickly. Basketball Was like 11 for him. Tony was much better than before. When Tony became sad or 12 , Sunny was there to help him. The day 13 Tony left the center, he had dinner with Sunny. He asked Sunny 14 he could be so happy, even with his broken legs. Sunny 15 and said, "It's really quite easy. When you keep your face to the sun,the shadows (阴影) fall behind." | ||||
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