依次填入句中横线上的词语，恰当的一组是（）。 ①他______不决

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问题单项选择题

依次填入句中横线上的词语，恰当的一组是（）。
①他______不决地伫立着，缓缓地环顾四周的房屋和院中的景物。
②他们学习了《中国教育改革和发展纲要》，决心统筹安排，因地制宜，______推进农村教育综合改革。
③为了躲避敌人搜捕，他______成一个阔太太，打扮得珠光宝气。

A．犹豫；逐步；化装

B．迟疑；逐渐；化妆

C．迟疑；逐渐；化装

D．犹豫；逐步；化妆

答案

参考答案：A

解析：

①句的两个词语差别不大，可以从②③句突破。②“逐步”指“一步步地”，有明显的阶段性，“遂渐”指“渐渐”，多用于事物较缓慢的变化，依据语境宜选“逐步”。③“化装”指“假扮”，可从容貌、衣着、年龄、身份等方面假扮；“化妆”指“用粉脂等使容貌美丽”，根据语境，宜用“化装”。

完形填空

Some years ago I was offered a writing assignment that would require three months of travel through Europe. I had been __36__ a couple of times, but I could hardly __37__ to know my ways around the continent. __38__, my knowledge of foreign languages was __39__ to a little college French.
I __40__. How would I, unable to speak the language, __41__ familiar with local geography or transportation systems, conduct interviews and do __42__? It seemed impossible, and with considerable __43__ I sat down to write a letter rejecting the __44__. Halfway through, a __45__ ran through my mind: you can’t learn if you don’t try. So I __46__ the assignment.
There were some bad __47__. But by the time I had finished the trip, I was an experienced traveler. And ever since, I have never hesitated to head for even the most __48__ places, without guides or __49__ advanced bookings, confident that somehow I will __50__.
The point is that the new, the different, is almost by definition __51__. But each time you try something, you learn, and as the learning _52_, the world opens to you.
I’ve learned to ski at 40, and flown up the Rhine River in a (n) __53__. And I know I’ll go on doing such things. It’s not because I’m braver or more daring than others. I’m not. But I’ll accept worry as another name for _54_and I believe I can 55_ wonders.

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问答题

实验是化学的基础．某学习小组设计并进行了下述两个实验．

（1）探究KI溶液和FeCl₃溶液反应存在一定的限度．

可选试剂：①0.1mol•L^-1KI溶液 ②0.1mol•L^-1 FeCl₃溶液 ③FeCl₂溶液 ④盐酸⑤KSCN溶液 ⑥CCl₄

实验步骤：

①取5mL 0.1mol•L^-1 KI溶液，滴加5～6滴0.1mol•L^-1FeCl₃溶液；

②充分反应后，将溶液分成两份；

③取其中一份，滴加CCl₄，充分振荡，静置，CCl₄层呈紫红色，说明反应生成碘．

④另取一份，滴加试剂______，现象______，说明______．

（2）为比较Fe³⁺和Cu²⁺对H₂O₂分解的催化效果，该小组的同学分别设计了如图甲、乙所示的实验．请回答下列问题：

①定性分析：如图甲可通过观察______，定性比较得出结论；有同学提出将CuSO₄改为CuCl₂更为合理，其理由是______．

②定量分析：如图乙所示，实验时均以生成40mL气体为准，实验中需要测量的数据是______．

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