问题 填空题

金属铝的生产是以Al2O3为原料,在熔融状态下进行电解:2Al2O34Al+3O2

请回答下列问题

(1)冰晶石(Na3AlF6)的作用是______________。

(2)电解生成的金属铝是在熔融液的_________(填“上层”或“下层”)。

(3)阴极和阳极均由_________材料做成;电解时不断消耗的电极是_________(填“阳极”或“阴极”)。

(4)铝是高耗能产品,废旧铝材的回收利用十分重要。在工业上,最能体现节能减排思想的是将回收铝做成_________(填代号)。

a.冰晶石 b.氧化铝 c.铝锭 d.硫酸铝

答案

(1)降低Al2O3的熔化温度

(2)下层

(3)碳素(或石墨);阳极

(4)c

阅读理解

A businesswoman, a mother of four, an international fashion icon(偶像) , a woman committed to making the world a better place for women and children—Queen Rania of Jordan is truly changing the world.

Rania was bom in Kuwait, in 1970.Shortly after Iraq invaded that country in 1990, her family fled and settled in Jordan.After graduating from a business school, Rania became successful in the business world.

When she was just 22, she went to a dinner party that changed her life forever.It was there that she met Jordan' s Prince Abdullah.Six months later, Rania and Abdullah had a royal wedding and started a family.

After the death of her father – in – law, King Hussein, in 1999, Prince Abdullah was crowned King Abdullah II of Jordan, and Rania became the world' s youngest living queen.

In her role as Queen, Rania has become well known around the world for her charity work and her efforts to improve educational opportunities for girls.She is an outspoken advocate of women' s rights, education reform, and child abuse.She is also well - known for her efforts to remove Western stereotypes (旧观念) about the Muslim world.

Rania explains that there is a direct relationship between increasing education and eliminating poverty." You can change the course of a nation through education," she says." One of the most important things you can do for a girl is empower her with her education.Once she has the education she can then have control over her income, she can change her life, she can have choices."

In the future, Rania says, she hopes for a more open and secure world."We look at problems happening halfway across the world and we think,' Well, that' s their problem.' But it' s not," she says." When you solve somebody else' s problem, you are solving a problem for yourself, because our world today is so interconnected."

小题1:Rania and her family moved to Jordan because ____.

A.she was engaged to Jordan' s Prince Abdullah

B.she wanted to attend a business school there

C.Jordan was a more developed country than Kuwait

D.the war broke out between Kuwait and Iraq小题2:Rania became the world' s youngest living queen when she was ____.

A.a girl of 22

B.at the age of 23

C.in her thirties

D.29 years old小题3:In her role as Queen, Rania is more devoted to ____.

A.her business work

B.girls' education

C.fashion shows

D.her family小题4:Rania thinks that ____.

A.women have brought about great changes to the world

B.education can help a girl find a wealthy husband

C.in the world today, all countries depend on each other

D.the Muslim world needs more help from the western countries小题5:The text mainly describes Rania as ____.

A.a caring mother

B.a fashion model

C.a social activist

D.a smart businesswoman

单项选择题