在装煤除尘中，人工往预喷涂中涂料最好的是（）A、煤粉 B、细石灰 C、焦粉

变性珠蛋白小体生成试验阳性见于()

A．HbM病

B．PK酶缺乏

C．HbS病

D．HbH病

E．不稳定血红蛋白病

I、（10分）现有下列电解质溶液：① Na ₂CO₃   ② NaHCO₃   ③苯酚钠(不与碱反应)   ④CH₃COONH₄   ⑤NH₄HCO₃

（1）在这五种电解质溶液中，既能与盐酸又能与烧碱溶液反应的是（填写序号）：         

（2）已知：酸性H₂CO₃ > 苯酚> HCO₃^-。常温下，物质的量浓度相同的① 、②、 ③溶液pH大小顺序为(填写序号)：            

（3）写出⑤与足量NaOH溶液混合加热反应的离子方程式                                       

（4）已知常温下CH₃COONH₄溶液呈中性，根据这一事实推测⑤溶液的pH     7(填＞、＝或＜)， 理由是：                                             

II、（4分）室温时，向a mL 0.10 mol/L的稀氨水中逐滴加入 b mL 0.10 mol/L的稀盐酸，试分析：

(1)当b＝a时，溶液呈________(填“酸”“碱”或“中”)性，此时溶液中，c(NH)________(填“＞”“＜”或“＝”)c(Cl^－)．

(2)当溶液呈中性时，a________(填“＞”“＜”或“＝”)b，此时溶液中c(NH)________c(Cl^－)(同上)．

哪项为化学配伍变化()。

A．红霉素乳酸盐与生理盐水配合，效价下降

B．20%甘露醇注射液与生理盐水配伍，引起甘露醇结晶析出

C．苯酚与樟脑配伍共熔制成液体滴牙剂

D．酊剂加入生理盐水产生沉淀

E．芳香水剂加入氯化钠分离出挥发油

阅读理解

     Britain's seed bank,  the only one in the world aiming to collect all of the planet's wild plant species, 

 has reached its goal of banking 10 percent by 2010.

     The Millennium Seed Bank Project,  run by Kew Gardens-one of the oldest botanical gardens-will

officially deposit the 24,200th species on Thursday,  a pink,  wild banana from China.

     More than 50 countries are now on board with Kew's giant task but vast places of the globe,  

including India and Brazil,  still need to join in and donate seeds,  director Paul Smith said.

     The seed bank is one of the largest and most diverse in the world with more than 1.5 billion seeds.Its

goal is to help protect the planet's biodiversity during a time of climate change.

     The wild banana seed is under threat of extinction (灭绝)  in Southwest China from agricultural

development.It is a vital food source for Asian elephants and important for growing bananas for human

consumption.

      Stored at minus20 degrees centigrade,  the seeds can last for thousands of years and await the day

that scientists hope never comes-when the species no longer exist in the wild.

     It is a race against time,  Smith said,  because in the last decade alone,  20 plants held in the bank

have already been wiped out in the wild.He estimates that between a third and a quarter will become

extinct this century.

     "It is urgent and it is happening now.An area,  the size of England,  is cleared of primary vegetation

(植被) every year." Smith said.

      Because most of the world's food and medicines come from nature,  protecting wild plant species

 is quite important,  scientists say.There are already many other seed banks safeguarding food crops, 

 which only account for 0.6 percent of plant diversity.

      For Kew's next goal-to collect a quarter of wild varieties by 2020-the botanists need 10 million

pounds a year,  or a further 100 million pounds on top of the 40 million they have already been granted.

1. What's the final purpose of the Britain's seed bank?

A. To collect enough money for the project.

B. To safeguard food crops.

C. To protect wild plants from extinction.

D. To help scientists study wild plants.

2. The wild banana seed in China is in danger because of________.

A. the expanding of farming work

B. the climate change in this area

C. the large number of Asian elephants

D. human's large consumption

3. We can learn from the passage that________.

A. the seeds in the bank can be used now and then spread all over the world

B. India and Brazil haven't joined in the Seed Bank Project at present

C. there is only one seed bank in the world at present

D. the wild plants in places like India and China will never die out

4. What does the underlined word "It" in Paragraph 7 refer to?

A. The extinction of plant species.

B. The Millennium Seed Bank Project.

C. Britain's seed bank.

D. Kew Gardens'next goal.

5. Which of the following information isn't mentioned in the passage?

A. The global partnership of collecting wild plant species.

B. The temperature condition of the conservative wild plant species.

C. The government's financial support for the seed bank project.

D. Scientists'concern on the extinct wild plant species.