( )足推进社会土义先进文化建设的必然要求。 A．坚持马克思主义在意识形态领域的指

为了研究外界条件对过氧化氢分解速率的影响，某同学做了以下实验，请回答下列问题．

编号	操           作	实验现象
①	分别在试管A、B中加入 5mL 5% H2O2溶液，各滴入1～2 滴1mol/L FeCl3溶液．待试管中均有适量气泡出现时，将试管A放入盛有5℃左右冷水的烧杯中；将试管B放入盛有40℃左右热水的烧杯中．	试管A中不再产生气泡，试管B中产生的气泡量增大
②	另取两支试管分别加入 5mL 5%H2O2溶液和 5mL 10%H2O2溶液．	试管A、B中均未见气泡产生

（1）过氧化氢分解的化学方程式为______．

（2）实验①的目的是______，实验中滴加FeCl₃溶液的目的是______．

（3）实验②未观察到预期的实验现象，为了帮助该同学达到实验目的，你提出的对上述操作的改进意见是______（用实验中所提供的几种试剂）．

（4）某同学在50mL H₂O₂ 溶液中加入一定量的二氧化锰，放出气体的体积（标准状况）与反应时间的关系如图所示，则A、B、C三点所表示的即时反应速率最慢的是______．

第Ⅱ卷（非选择题四部分共35分）

第四部分 单词拼写 (共10小题,每小题0.5分,满分5分)

71. At that time, the record player had to be ________ up (上发条) by hand and only played a record for two minutes.

72. She didn’t tell him the news ________(故意地).

73. There are ________ (现场直播的) football matches on TV every Sunday.

74. Please come whenever it is ________ (方便的) to you.

75. When he saw the little boy drowning in the river, he jumped into the water without ________ (犹豫,迟疑不决)

76. While c________ human embryos is illegal in many countries, some scientists are already pushing ahead with research so as to deliver a cloned human baby.

77. The villagers are determined to r________ their homes after the whole village was destroyed in the earthquake.

78. I feel it e________ to forget the lines while singing in public.

79. With the temperature d________ to zero degree, fewer people go out during the night.

80. Jack ran for a doctor; m________, we stayed with the patient.

顺次连结任意四边形四边中点所得的四边形一定是（   ）

A．平行四边形

B．矩形

C．菱形

D．正方形

我国民事诉讼法规定，对妨害民事诉讼的行为可采取的强制措施包括( )。

A．拘留

B．训诫

C．罚款

D．责令退出法庭

什么是体态语言？它有什么特点？