Any activity that requires too much ( ), such as reading a novel or a long article, demands your focus, so you slow down physically. ( 章节：4 难度：2)_做题室

单项选择题Any activity that requires too much ( ), such as reading a novel or a long article, demands your focus, so you slow down physically. ( 章节：4 难度：2): A、statistics; B、atmosphere; C、concentration; D、supplement

正确答案：C
答案解析：
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