问题 选择题

将100mL 0.1mol/L的AgNO3溶液加入足量的NaCl和NaF的混合溶液中,产生1.435g沉淀,则下列说法正确的是(  )

A.产生的沉淀为AgCl

B.产生沉淀为AgF

C.产生的沉淀为AgF和AgCl

D.AgF不溶于水

答案

因AgCl不溶于水,而AgF易溶于水,则AgNO3溶液加入足量的NaCl和NaF的混合溶液中,只生成AgCl沉淀,且n(AgCl)=

1.435g
143.5g/mol
=0.01mol,说明只生成AgCl沉淀.

故选A.

阅读理解

Answer the questions. (根据短文内容回答下列问题。)

                                                                                                                               Mar. 25, 2009

Dear Helen, 

       Thanks for your last letter. Yes, I'm enjoying myself on my exchange program in France. It's even

better than I thought it would be. I was a bit nervous before I arrived here, but there was no reason to be.

My host family is really nice. They go out of their way to make me feel at home. And you wouldn't believe

how quickly my French has improved! I'm very comfortable speaking French now. Although I still make

lots of mistakes, it doesn't bother me as it used to. My biggest challenge is learning how to behave at the

dinner table. As you can imagine, things are really not the same as the way they are at home. For example,

you're not supposed to put your bread on your plate. You're supposed to put it on the table! I thought that

was pretty strange at first, but now I'm used to it. You're not supposed to eat anything with your hands

except bread, not even fruit! (You have to cut it up and eat it with a fork.) Another thing is that it is very

rude to say you're full. If you don't want any more food, you should just say, "It was delicious." Also, it's

rude to put your hands in your lap. You should always keep your hands, but not your elbows, on the table.

I have to say, I find it difficult to remember everything, but I'm gradually getting used to things and don't

find them so strange any more. I'll write soon and tell you more about life in France. Hope you're having a

good school year.

                                                                                                                                              Yours,

                                                                                                                                               Mei Fei

1. Where is Mei Fei now? 

                                                                                                                                                    

2. Was there any reason for Mei Fei to be nervous before she arrived there? 

                                                                                                                                                     

3. What does Mei Fei think of her host family?

                                                                                                                                                      

4. How does Mei Fei feel while she is speaking French now? 

                                                                                                                                                      

5. What is the biggest challenge she is facing?

                                                                                                                                                      

6. When can Mei Fei eat things with her hands? 

                                                                                                                                                      

7. Why do you want to go there if you have the chance to take part in an exchange program? 

                                                                                                                                                      

综合题

2011年是中国人民抗日战争胜利66周年,而在116年前的中日甲午战争中,中国却以战败而告终。这一胜一败的结局给后人留下了深刻的反思。阅读下列材料,回答问题。

材料1:明治维新后,日本制定了第一期征服台湾,第二期征服朝鲜,第三期征服满蒙,第四期征服支那,第五期征服世界的对外扩张战略。1887年日本政府制定了《清国征讨方略》,决定在1892年前完成对华作战的准备,进攻的方向是朝鲜、辽东半岛、山东半岛、澎湖列岛、台湾、舟山群岛。

材料2:中日战争前,英国《泰晤士报》驻东京记者布林克莱在一篇题为《朝鲜和他的邻居》的报道中说:“(日本)比中国人自己更清楚地知道(中国)每一省可以抽调多少人出来作战”。

材料3:在战争危险日益迫近的紧要关头,清政府以财政紧张为由,削减军费预算;而甲午孝钦皇太后六旬万寿庆典,先是修三海,共花费白银600万两,其中挪用海军经费437万两,后又修建颐和园,耗资1 000万两,挪用海军军费750万两。

材料4:清政府自始即采取求欧洲列强干涉,速行终止中日战争之政策,李鸿章屡求各国代表援助,且电讯其驻欧洲各国之使臣,使直接哀求各驻在国之政府。

(1)据上述材料,说明中日甲午战争爆发的根本原因。(4分)

(2)据材料3、4,结合所学知识,分析说明甲午战争中中国战败的必然性。(6分)

(3)抗日战争的胜利,在中 * * 的复兴史上占有重要历史地位,结合所学相关知识,简要分析抗日战争在中 * * 复兴史上的重大作用和影响。(6分)