题目

将1.20 g铁铜合金完全溶于100 mL、12.0 mol·L-1浓硝酸中,得到NO2和N2O4混合气体672 mL(换算为标准状况下)。向反应后的溶液中加入1.0 mol·L-1 NaOH溶液,当金属离子全部沉淀时,得到2.05 g沉淀。下列有关判断正确的是() A . 反应过程中浓硝酸仅体现氧化性 B . 该合金中铁与铜物质的量之比是2:1 C . 混合气体中,NO2的体积分数是1/3 D . 金属离子全部沉淀时,加入NaOH溶液的体积至少为1150 mL 完形填空。      Kids like to play games (游戏). Do you often play hide-and-seek (捉迷藏)   1   your friends? A lot of kids often play this game and love to play   2   . Hide-and-seek is a very   3   game. Maybe (可能) your father and mother   4   the game. Maybe your grandparents play it,   5   .   6   do we know this? Old stories (故事) tell us   7   hide-and-seek. In old photos, we can   8   the game, too. Boys and girls play   9   old games. Big kids tell small kids about   10   . And so (因此) the games live on (继续存在). (   )1. A. and  (   )2. A. one  (   )3. A. old  (   )4. A. do  (   )5. A. one  (   )6. A. Why  (   )7. A. about (   )8. A. say  (   )9. A. a lot (   )10. A. they  B. for   B. it    B. new    B. like B. too   B. How    B. to   B. see    B. much  B. them C. with   C. they   C. big     C. playC. to    C. What   C. with  C. talk     C. many   C. him  D. to      D. ones    D. small   D. see     D. two     D. Where   D. for     D. like    D. lot of  D. her    
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