题目内容
【题目】听下面一段对话,完成五道小题,每小题仅填写一个词。这段对话你将听两遍。
【答案】
(1) violent
(2) 49 percent/49%
(3) Iraqi
(4) long and hard
(5) spend less
【解析】听力原文:
Nowhere are women leaders more essential than in countries devastated by war. Studies show that women are better at creating and keeping the peace in post-conflict societies because women are generally less violent than their male counterparts. In Rwanda's most recent election, women won 49 percent of the seats in parliament--the highest proportion in the world. Increasingly, citizens in such societies are turning to women for help. The Iraqi Constitution last month, guarantees women 25 percent of the seats in parliament. Liberians hoping to secure peace after decades of civil war could become the first African country with a woman president if they elect Ellen Johnson Sirleaf in the final round of balloting on Nov. 8. Perhaps the greatest hope is that increasing the ranks of women in government will help prevent future wars. During the Bosnian war, I asked the prime minister of Bosnia, "If half of the people around the table at the very beginning had been women, would there have been a war?" And he said, "No. Women think long and hard before they send their children out to kill other peoples' children." Are women actually more peaceful than men? Looking at Cameroon, Bolivia and Malaysia, a recent study found that when women have a greater say in spending priorities, they spend less on the military. "When women reach 30 or 40 percent of government, you get much more funding for health care and education."
【题目】实验探究是体验知识的产生和形成过程的基本途径。下面是某同学完成的探究实验报告的一部分:
实验名称:卤素单质的氧化性强弱比较
实验药品:KBr溶液、KI溶液、氯水、溴水、碘水、四氯化碳、淀粉碘化钾试纸
实验设计如下表:
实验步骤 | 实验结论 |
①新制氯水+1 mL CCl4,振荡,静置,观察四氯化碳层颜色 | |
②NaBr溶液+新制氯水+1 mL CCl4,振荡,静置,观察四氯化碳层颜色 | 氧化性从强到弱的顺序:氯、溴、碘 |
③KI溶液+新制氯水+1 mL CCl4,振荡,静置,观察四氯化碳层颜色 |
请回答下列问题:
(1)完成该实验需用到的实验仪器是 、 。(填仪器名称)
(2)步骤②中反应的化学方程式为 ,步骤③中反应的离子方程式为 。
(3)CCl4在实验中所起的作用是 。
(4)该同学的实验设计不足之处是 ,改进的办法是 。