问题 填空题

请用化学知识回答:

(1)化石燃料通常是指煤、______、天然气;用石灰浆粉刷墙壁后的室内放置一燃烧的煤炉,可使墙壁迅速硬化,同时墙壁上会出现一些水珠,其原因是(用化学方程式表示)______.

(2)如果煤炭长期密实地堆积,可能会因______导致温度升高而自燃;当大量堆积的煤发生燃烧时,灭火的最好方法是______(写一种).

(3)汽车的尾气管中装有金属铂、钯的合金网,目的是将汽油燃烧时产生的有害气体CO、NO转变为CO2和N2,那么这些金属在反应中起的作用是______.

答案

(1)天然气、煤、石油属于化石燃料.故填:石油.

氢氧化钙和二氧化碳反应生成碳酸钙和水,化学方程式为:Ca(OH)2+CO2=CaCO3↓+H2O

(2)煤容易发生缓慢氧化,缓慢氧化放出热量,如果空气流动不畅时,容易发生自燃.煤发生燃烧时,灭火的最好方法是隔绝氧气.故填:缓慢氧化;用沙或石棉等方法隔绝空气(注:若用水或用泡沫灭火器浇灭,会产生水煤气:H2与CO的混合气体).

(3)有害气体CO、NO转变为CO2和N2,通过这个转化可以看出,生成物中没有金属元素的出现,所以这些金属在反应中作催化剂.故填:催化作用.

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She belongs to no one but the whole world that can understand her language. Her music is appreciated across the globe but it is Singapore, China, Thailand and Britain that have helped to shape her talent.

Violinist, Vanessa-Mae, best known for her pioneering mix of pop and classical music, has just completed her Asian tour. She has a magic power that has attracted an audience from around the world but the violin genius has always drawn fans by blazing a new trail.

“I don’t like playing it safe, I like jumping into new styles,” she said. She started her Asian performance tour in China’s Hong Kong on September 19 and visited the Malaysian capital of Kuala Lumper. The tour, aiming to promote her new album, “The Best of Vanessa-Mae”, ends in Thailand’s capital Bangkok on September 30.

The graceful and beautiful musician has attracted lots of fans in the places she has visited. She said although she enjoys trying out different forms of performance, including fashion shows and singing, she feels more comfortable with her violin. She has promised her fans she will never abandon the classical music that was the foundation of her training.

Vanessa-Mae, now 23, first picked up the violin at five. After six months of intensive training in Beijing, he turned professional at 10. it was her fusion (融合) of classical and rock in her 1995 album “The Violin Player”, that shot the then 17-year-old to international recognition. The record sold 3 million copies worldwide.

She has a Chinese-Singaporean mother and a Thai father. She was born in Singapore and grew up in Britain. Vanessa-Mae has released seven albums and plans two more in the near future—first a classical album,, then a pop recording.

She has said she wants to perform for the next 10 years, but after that she may settle down with her boyfriend, a 33-year-old wine-dealer from France, and concentrate on writing music.

小题1:Vanessa-Mae started her Asian performance tour           .

A.to concentrate on writing music

B.to go on a lobng journey

C.to sell her new album “The Best of Vanessa-Mae”

D.to attract her fans小题2:She has given performance in these forms EXCEPT        .

A.playing the violin

B.fashion shows

C.singing

D.playing the piano小题3:What can we know about Vanessa-Mae from the passage?

A.Her music is a mix of pop and classical music.

B.She has released nine albums.

C.Her music is a fusion of Chinese and Western music.

D.Being born in Singapore and growing up in Britain have resulted in popularity of her music.