问题 选择题

绿色化学又称环境友好化学,它的特点之一是:提高原子的利用率,使原料中所有的原子全部转化到产品中,实现“零排放”。下列反应符合绿色化学这一特点的是

A.工业制取生石灰CaCO3高温 CaO+CO2

B.实验室制取氢气Zn+H2SO4=ZnSO4+H2

C.制熟石灰CaO+H2O=Ca(OH)2

D.工业炼铁:Fe2O3+3CO高温 2Fe+3CO2

答案

答案:C

题目分析:根据题意分析,若要反应物里的原子数百分之百都得到了利用,那么,这个化学反应就要没有废弃物产生;而在我们所学的反应类型中,化合反应符合这一特点,它能把反应物的各种原子都集中到同一生成物中,没有副产品产生,也就不会产生污染。故选C

点评:绿色化学的主要特点,就是要从源头消除污染;解答本题的关键就是要读懂题意,明确本题其实是考查化合反应的判定。

不定项选择
阅读理解

It’s no surprise why Kung Fu Hustle is the top-grossinghomegrown movie in Hong Kong. Hustle’s approach to a simple good-against-evil plot is extremely cheerful.

Humor bordering on slapstick combined with exciting choreographyby Yuen Wo Ping, who mastermindedthe fight scenes in Crouching Tiger, Hidden Dragon and The Matrix, make Kung Fu Hustle a lively, visual treat.

There is plenty of violence, but it’s largely cartoonish. Stephen Chow wrote, directed, produced and stars in this non-stop action movie, which is in Cantonese with English subtitles.

Chow plays Sing, an eager young man who longs to be a member of the powerful and cruel Axe Gang. When gang members appear on the scene, sometimes dancing with their frightening axes in hand, the sky breaks out with fireworks. The sets are shocking, with classic cars lining the neon-lighted streets and gambling casinosserving as the backdrop to the underworld activities. All these give off the sensation of Old West shootouts.

One neighborhood is blessedly away from the disorder. Pig Sty Alley is so poverty-stricken it holds no interest for the Axe Gang. Then in wanders the unlucky Sing, who attempts to get money there. But folks are not what they seem: The town is full of kung fu masters.

Sing tries to single out someone he can fight, but it seems as if everyone, elderly and very young alike, has a body like Charles Atlas. During the time, Sing calls upon the Axe Gang, which faces off against the people of Pig Sty Alley, led by the town’ s landlords, the powerful lady in curlers and her husband. Fans of kung fu movies will have a rip-roaring time, but even moviegoers are sure to enjoy spirited action of Kung Fu Hustle.

Notes:

①    top-grossing  adj. 票房收入最高的

②    choreography  n. 舞蹈术

③    mastermind  vt. 策划

④    subtitle  n. 说明对白的字幕

⑤    gambling casino  赌博场

小题1:Which of the following characters does the passage mainly describe?

A.Stephen Chow

B.Yuen Wo Ping

C.Sing

D.Charles Atlas小题2:Kung Fu Hustle becomes the top-grossing homegrown movie in Hong Kong because _______.

A. it is full of humor and exciting action      B. it is full of cartoonish characters

B. it is mainly made up of dance            D. it is a non-stop action movie

小题3: Which of the following about the Axe Gang is TRUE?

A.The Axe Gang is popular with fans of kung fu movies.

B.The Axe Gang is always easy do good things.

C.The Axe Gang doesn’t know how to use guns.

D.The Axe Gang often fights against its enemy using the axes.小题4:In which part are you likely to find it if the passage appears in the web site?

A.Entertainment.

B.Travel.

C.News.

D.Books.