正确答案: C

人生须知未尽责任的苦处，才能知道尽责任的乐趣。(梁启超)

题目：下面四个选项中，最适合作本文理论论据的一项是( )(3分)

解析：C

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举一反三的答案和解析：

[单选题]39． I'm busy today． I'm going to have my CD player ______________．

fixed

解析：39．A【解析】句意，我今天很忙，我打算请人修理我的 CD播放机。“have sth． done”表示“请人做某事”，过去分词done和宾语sth．构成被动关系，在此作宾补。

[单选题]16．This photo reminds me _______ the days when l worked ________ the farm with my classmates．

of; on

解析：16．D【解析】句意：这张照片使我想起了和我同班同学在农场工作的那些日子。remind sb． of sth．使某人想起某事，在农场用介词on．故选D。

[单选题]某工地发生多人食物中毒，经化验为误食工业用盐亚硝酸钠（NaNO2）所致。NaNO2中氮元素的化合价是（        ）

+3

[单选题]AOn Sundays，Peter gets up at six． He puts on(穿) his clothes and does some wash-ingc洗衣服）． He eats breakfast at seven o'clock． He doesn't go to school: There are not any classes on Sundays． He reads English and Chinese and does his homework in the morning．

a student

解析：21.B【解析】由第一段最后三句可知。