问题 选择题

生活中处处有化学,下列有关说法正确的是(  )

A.石油、天然气和煤的主要成分都是烷烃

B.氧化铝可用作制造高温耐火材料,如制耐火砖、坩埚等

C.“春蚕到死丝方尽,蜡炬成灰泪始干”中的“丝”和“泪”分别是指纤维素和油脂

D.人造纤维、合成纤维和光导纤维都是有机高分子化合物

答案

答案:B

煤是由有机物和少量无机物组成的复杂混合物,石油的主要成分为烷烃、环烷烃和芳香烃,A项错误;氧化铝熔点很高,可用于制造高温耐火材料,B项正确;蚕丝的主要成分为蛋白质,蜡烛的主要成分为石蜡,属于烃,C项错误;光导纤维的主要成分为SiO2,D项错误

问答题
阅读理解

In 1993 an unknown American called Clarence Nash went to see the filmmaker Walt Disney. He had an unusual voice and he wanted to work in Disney’s cartoon(动画片) film for children. When Walt Disney heard Nash’s voice, he said “Stop! That’s our duck!”

The duck was the now-famous Donald Duck, who first appeared in 1934 in the firm The Wise Little Hen. Donald lived in an old houseboat(水上住家) and wore his sailor jacket and hat. Later that year he became a star after an eight – minute Mickey Mouse film. The cinema audience liked him because he was lazy and greedy(贪婪的), and because he lost his temper (发脾气) very quickly. And they loved his voice when he became angry with Mickey’s  eight nephews(侄子). Soon Donald was more popular than Mickey Mouse himself, probably because he wasn’t a goody-goody like Mickey.

In the 1930S, 40s and 50s Donald and his friends Mickey, Goofy and Pluto made hundreds of Disney cartoons. He also made educational films about the place of the USA in the world, and safety in the home. Then in 1966 Donald Duck and his voice disappeared – there were no more new cartoons.

Clarence Nash died in February, 1985. But today’s children can still see the old cartoons on television and hear that famous voice.

41. Who made Donald Duck film? ______

A. Mickey Mouse.                 B. Clarence Nash.

C. Walt Disney.                   D. Pluto.

42. When was the first Donald Duck film made? ______

A. In 1933.         B. In 1934.        C. In 1966.        D. In 1930.

43. Who was Clarence Nash? ______

A. A cartoonist.                    B. Donald Duck’s voice.

C. A film-maker.                    D. A film star.

44. Where do today’s children see Donald Duck ? ______

A. In new film.                  B. At the cinema.

C. On television.                D. At concerts.

45. The underlined word “audience” in the second paragraph means______ .

A. reads            B. formal interview

C. law freedom      D. the people who watch a film at a cinema