问题 选择题

氯气溶于水达到平衡形成饱和溶液,若其他条件不变,只改变某一条件,下列叙述正确的是:

A.再通入少量氯气,c(H+)/ c(ClO)减小

B.通入具有漂白性的SO2气体,溶液的漂白性增强

C.氯水中存在的分子、离子共5种

D.加入少量水,水的电离平衡向正反应方向移动

答案

答案:D

溶液是饱和溶液,所以A中比值不变,A不正确。氯气能氧化SO2生成硫酸和盐酸,漂白性降低,B不正确。C不正确,应该是3种分子、4种离子。所以正确的答案选D。

阅读理解

I am untraditional. I like the different gift that nobody else would think

of to give. I hardly know what to get this year, however. I have given this a lot of thought because I just didn’t have a perfect gift this year for Father’s Day. As a daughter, I came up with some nice possibilities and wanted to share them with others.

Weekend stay at a favorite place. Maybe two nights in a motel(汽车旅馆) would be nice for him. He and his dear could get away for an entire weekend and would not have to worry about the room and board. It would show some thought and generosity. It might be rather expensive and out of the question for some of us, but for others it may be within price range.

Concert tickets. If your dad has a favorite musician or band he would like to see, what an opportunity! He would enjoy himself and what a gift! The entire time at the concert he would  be thinking of you and what a great gift! In most cases, they would spend their money on the family or something else.

Designer clothes for the summer. Get his sizes. A lot of men will not shop for themselves. Find out his favorite colors and brand names. Let your dad add some handsome clothes to his summer wardrobe.

Gift basket of his favorite food. Whatever he likes to eat, get him a decorative gift basket of his favorite stuff. Add a bit of coffee or tea. Summer sausage, shrimp, or sushi(寿司)? Chinese, Italian, German, or none of the above! You know him pretty well, so surprise him with delicious food and watch him gladly receive it. If you are short of cash, cook a meal yourself!

60. From the first paragraph we can know that the author _____.

A. has got a suitable gift for her father

B. has prepared different gifts for her father

C. will be away from home on Father’s Day.

D. wants to get a special gift for her father

61. The author recommends buying concert tickets probably because _____.

A. all people should learn to appreciate music

B. adults are careful with money and seldom go to concert.

C. it will bring adults back to their childhood

D. most people are fond of going to concerts.

62. If you don’t have money, you’d better _____.

A. get away from home with your father

B. buy some clothes for your father

C. give your father a decorative gift basket

D. prepare a dinner for your father at home.

63. What is the main idea of the passage?

A. It is difficult to choose a gift for Dad.

B. There are some good suggestions for Father’s Day.

C. The author has difficulty pleasing her father.

D. The author’s father will be unhappy if he can’t receive gifts.

问答题 简答题