问题 完形填空

第Ⅱ卷(非选择题:共25分)

I.完成句子: 根据首字母或汉语提示填入所缺的词,每空一词. ( 每空0.5分,满分15分)

76、It is ______(明显的) that our teacher is very disappointed. Can’t you see it from her face?

77、Please f_____ me for being late. The traffic at this time is very heavy.

78、It’s important to eat a ______ (均衡的) diet.

79、She is starving herself to lose w_______.

80、Jim’s father didn’t ______ (允许) him to join the school football team

81、Nobody can e_____ without air or water.

82、Clouds are masses of very small drops of water that ______ (漂浮) in the sky.

83、Smoking is h_______ to people’s health.

84、The patient is ______ (稍微地) better today.

85、His house is ________ (包围、环绕) by a big tree.

86、The building was built ______  _____  ___ (为了纪念) that educator.

87、The little girl likes to _____  ______ (打扮、装扮) in her mother’s clothes.

88、I waited for a long time, but he didn’t ______  _____. (出现)

89、It’s bad manners to ______  _______(说谎).

90、Perhaps with a discount and a new sign he could _____  ____ (赢回)his customers.

91、_____  _____  _______ (说实话), I don’t think we have a chance of winning.

92、He met Tom in the street ____  ______ (意外地)yesterday.

93、----- I’m too nervous.

------______  ______. (振作起来) I’m sure you’ll make it.

94、Tom, _____  ______(而不是)his two younger sisters, was to be punished for the wrong decision.

答案

76.obvious   77.forgive   78.balanced   79.weight    80.allow / permit   81.exist    82.float   83.harmful   84.slightly   85.surrounded    86.in memory of     87.dress

Up    88.turn up    89.tell lies   90.win back    91.to be honest    92.by chance / by accident    93.cheer up    94.rather than

实验题

(16分)某研究性小组借助A-D的仪器装置(可以重复使用)完成有关实验

【实验一】收集NO气体。

(1)用装置A收集NO气体,正确的操作是       (填序号)。

a.从①口进气,用排水法集气          b.从①口进气,用排气法集气

c.从②口进气,用排水法集气          d..从②口进气,用排气法集气

【实验二】净化用浓盐酸与KMnO4反应得到的Cl2

(2)请参照装置A,画出净化Cl2装置图,标明所盛的药品,标注气体的流动方向。

【实验三】为了探究镀锌薄铁板上的锌的质量分数w(Zn)和镀层厚度,查询得知锌易溶于强碱:Zn+2NaOH=Na2ZnO2+H2↑ 据此,截取面积为S的双面镀锌薄铁板试样,剪碎、称得质量为m1 g。用NaOH溶液作试剂,拟出下列实验方案并进行相关实验。

方案甲:通过测量试样与碱溶液反应生成的氢气体积来实现探究目标。

(3)选用                (填仪器标号)两个装置进行实验。

(4)测得充分反应后生成氢气的体积为VL(标准状况),w(Zn)=       

(5)计算镀层厚度,还需要检索的一个物理量是              

(6)若装置B中的恒压分液漏斗改为普通分液漏斗,测量结果将    (填“偏大”、“偏小”或“无影响”)。

方案乙:通过称量试样与碱反应前后的质量实现探究目标。选用仪器C做实验,试样经充分反应,滤出不溶物、洗涤、烘干,称得其质量为m2g

(7)w(Zn)=       

问答题 案例分析题