以黄铁矿(主要成分是FeS₂)为原料生产硫酸的工艺流程图如下：

(1)若从下列四个城市中选择一处新建一座硫酸厂，你认为厂址宜选在______的郊区(填标号）

A.有丰富黄铁矿资源的城市      B.风光秀丽的旅游城市

C.消耗硫酸甚多的工业城市     D.人口稠密的文化、商业中心城市

(2)沸腾炉中发生反应的化学方程式为_____，接触室中发生反应的化学方程式是_____。

(3) 在硫酸工业制法中，下列生产操作与说明生产操作的主要原因二者都正确的是_____。

A. 硫铁矿燃烧前要粉碎，因为大块的黄铁矿不能在空气中反应

B. 从沸腾炉出来的气体要净化，因为炉气中的SO₂会与杂质反应

C. SO₂氧化成SO₃要用催化剂，这样可提高SO₂的转化率

D. SO₃用98. 3%的浓硫酸来吸收，目的是为了防止形成酸雾，以提髙SO₃吸收效率

(4) 下表是压强对SO₂平衡转化率的影响

对于SO₂转化SO₃的反应,增大压强可使转化率______________，但在实际工业生产中常采用常压条件，理由是________________________________。

(5)某工厂用500t含硫量为48%的黄铁矿制备硫酸，若在沸腾炉中有2%的FeS₂损失,在接触室中SO₃的产率为96%,则可得到98%的浓硫酸的质量是_____t。

There are many international organizations which work to save and protect endangered species(物种) and natural environment. If you would like more information about any of the organizations listed below, you can write to the addresses given.

Friends of the Earth

Friends of the Earth (FOE) campaigns on a range of problems including rainforests, the countryside, water and air pollution and energy.

Friends of the Earth International Secretariat P.O. Box 19199

1000 G. D.

Amsterdam

The Netherlands

Greenpeace

Greenpeace uses peaceful but direct action to defend the environment. It campaigns to protect rainforests and sea animals, stop global warming and end pollution of air, land and seas. It also opposes nuclear(核) power.

Greenpeace International

Keizergracht 176

1016 DW Amsterdam

The Netherlands

BirdLife

INTERNATIONAL

BirdLife International is an organization which works to save endangered birds all over the world.

BirdLife International

Wellbrook Court

Girton Road

Cambridge CB3 ONA

England

WWF

WWF-World Wide Fund For Nature is the world’s largest private international organization for the protection of nature and endangered species.

Information Officer

WWF International

Avenue du Mont-Blanc

1196 Gland

Switzerland

小题1:If you want to learn more about the organizations, you can           .

A．call them

B．write them a letter

C．visit them

D．send them an e-mail小题2:Which problem will be paid close attention to by FOE?

A．Overhunting ocean animals

B．Killing endangered birds

C．Heavy air pollution

D．Global warming小题3:If you are against nuclear power, you can join         .

A．Friends of the Earth

B．World Wide Fund For Nature

C．Greenpeace

D．BirdLife International小题4:What can we learn about WWF?

A．It helps to protect nature and save endangered animals

B．It is the world’s largest international organization

C．It works for private companies and rich people

D．It is a private organization in the United States小题5: Which is the best title for the passage?

A．Environmental protection organizations

B．Global traffic problems

C．Endangered animals

D．Natural beauty