试题与答案

相同温度下,两种弱酸HA、HB的电离平衡常数K。(HA)>K。(HB)。下列有关

题型:选择题

题目:

相同温度下,两种弱酸HA、HB的电离平衡常数K。(HA)>K。(HB)。下列有关说法正确的是             (   )

A.浓度均为0.1 mol·L-1的HA、HB溶液中,其溶液的pH大小为:

pH(HA)>pH(HB)

B.浓度均为0.1 mol·L-1的NaA、NaB溶液中,其溶液的pH大小为:

pH(NaA)>pH(NaB)

C.等体积pH相同的HA、HB溶液,分别加入等浓度的NaOH溶液,恰好完全反应消

耗的NaOH溶液体积HA比HB多

D.在0.1 mol·L-1NaA溶液中各离子浓度关系为:

c(Na+)>c(A)>c(OH)>c(H+

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错解析:当土地使用权转让价格明显低于市场价格时,市、县人民政府有优先购买权。

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题型:阅读理解

阅读理解。

     Three more cattle farms in Andong,North Gyeongsang Province,were found to have been infected

with the deadly foot-and-mouth disease,Nov. 2 2010,Thursday. People fear that livestock farms in other

parts of the country could be hit by the virus soon.

     On Monday,the disease was first detected on two pig farms in Andong,about half a year after the last

disease broke out in Korea. A cattle farm in the area also fell victim to the animal disease the following

day.  

The Ministry for Food,Agriculture,Forestry and Fisheries made sure that three more cases of

foot-and-mouth disease appeared on Thursday and decided to kill all the animals at the farms and others

at nearby places to stop the spread of the virus to other regions. Over 800 cows and pigs within a 500

meter range of the infected farms were killed and buried underground.  

     "Three suspected cases were reported Wednesday,near the pig farms where the first outbreak was

reported. The laboratory tests today showed that all three cattle farms were infected with the disease,"

a ministry official said. Two newly infected cattle farms were less than 4 kilometers away from the two

pig farms,while the third one was only 2. 5 kilometers away.  

     The ministry also said another cattle farm in Andong reported suspected cases of foot-and-mouth

disease on its livestock Thursday,indicating the disease will likely continue to spread across the city and

possibly beyond.  

     The government has culled more than 33,000 animals near the affected farms Monday alone under its

disease prevention program. Additionally,all 84 livestock markets across the nation were closed

Wednesday for a period to prevent spread of the disease.

     No suspected cases have been reported outside of Andong,but the government Thursday decided to

destroy an additional 22,000 pigs at two farms in Boryeong,South Chungcheong Province.

1. Last time foot and mouth disease          .

A. broke out in North cattle farms

B. was controlled as soon as possible

C. happened in June,2010

D. destroyed almost all cattle in cattle farms

2. How did the government deal with the disease?

A. The government controlled only the two farms.

B. The government had more animals killed.

C. The government tried to cure the sick animals.

D. The government hated to kill animals.

3. The underlined word "culled" has the same meaning as          .

A. treated

B. killed

C. bought

D. sold

4. From the last paragraph we can know that          .

A. 22,000 pigs have been infected with the disease

B. 22,000 pigs will be moved to other farms

C. Boryeong is also an infected area

D. 22,000 pigs will go down to their death

5. In which part of a newspaper can you most probably read the passage?

A. Today's News  

B. History and Culture

C. Entertainment

D. Science

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