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2016奉贤初三化学二模

1-ABABD CDCAAC DB 16-20CABCB 21-25 DCBDC 26-30CBCDC 31-35 ADDBB 36-40DEFAC 41-45 ADBBC 46-50ACADB 51-55 BCCDA 56-60DDCBB 61. it 62.of 63. is 64.overlooking 65. became 66.which 67. the 68.geographical 69. equipped 70. that 短文...

在印象中没有,但是2011年海淀一模或二模的作文好像是条形统计图

1-ABABD CDCAAC DB 16-20CABCB 21-25 DCBDC 26-30CBCDC 31-35 ADDBB 36-40DEFAC 41-45 ADBBC 46-50ACADB 51-55 BCCDA 56-60DDCBB 61. it 62.of 63. is 64.overlooking 65. became 66.which 67. the 68.geographical 69. equipped 70. that 短文...

1. CABC A B CDCDACDB D B CBA 2. (1)What has happened: We have just moved (2);This has not been easy (.3); I have…put (4); I haveever seen (5) What hasbeen happening: I have been working (6);I havebeen trying (7) haveexplaine...

网上有的

海盗小说,

(1)如果H处放少量锌粒,G处盛稀盐酸,当稀盐酸和锌粒反应时生成了氢气,在加热的条件下,氧化铜被氢气还原生成了铜,所以,则加热处的现象为:黑变红;反应的化学方程式为CuO+H2 △ . Cu+H2O;为了实验安全,在加热前应采取的措施是通一会儿氢...

2NaOH+H2SO4=Na2SO4+2H2O,2NaOH+CuSO4=Cu(OH)2↓+Na2SO4A、根据稀硫酸、硫酸铜和NaOH混合溶液的反应原理,向混合溶液中逐滴滴入NaOH溶液至过量,相比之下,刚开始是稀硫酸的量多,而NaOH的量少,所以NaOH先与稀硫酸反应,而不是先产生沉淀.所...

狗毛

A.苯和硝酸沸点较低,易挥发,可用长玻璃导管冷凝和回流,故A正确;B.加热密闭装置,防止容器内压力过高,可用导管与外界想通进行导气减压,故B正确;C.长导管对热气体与空气进行热交换进行冷凝,冷却剂是空气,故C正确;D.玻璃棒的作用有:...

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