问题 单项选择题

只有()才是一种可以大规模使用的安全的和经济的工业能源。

A、风能 

B、太阳能 

C、核能 

D、地热能

答案

参考答案:C

解析:

目前世界上的主要能源是煤、石油、天然气这些化石燃料,化石燃料是不可再生能源,并向大气排放大量的“温室气体”二氧化碳、形成酸雨的二氧化硫和氮氧化物,和大量的烟尘,这些有害的物质对环境造成了严重的破坏。风能、太阳能、地热能、潮汐能、生物质能、海水温差等等这些能源很难在短期内实现大规模的的工业生产和应用。只有核能,才是一种可以大规模使用的安全的和经济的工业能源。从20世纪50年代以来,美国、法国、比利时、德国、英国、日本、加拿大等发达国家都建造了大量核电站,核电站发出的电量已占世界总发电量的16%,其中法国核电站的发电量已占该国总发电量的75%,在这些国家,核电的发电成本已经低于煤电。

单项选择题

Passage Four

Roger Federer Lights up the Arabian Night
罗杰·费德勒点亮阿拉伯之夜

Plenty of people will be glad Tim Henman was not here to trouble Roger Federer once more last night,as the seedings said he should have been.Popular with the expatriates though he may be,and capable of upsetting Federer though he undoubtedly is,there is nothing quite so stirring as seeing one of the most gifted world No l s of all in full cry.
Instead of struggling with his jinx player,Federer imposed a spell of his own.He beat Andrei Pavel,whom Henman beat in the Paris Masters final,by6-3,6-3,and strode the court like a ruler who knows his aura is expanding.
It carried the Swiss imperiously into a semi-finals of the Dubai Championships,where he will face Jarkko Nieminen.The Finn earned his place by defeating the Dutch No 8 seed Sjeng Schalken 6-3,6-3.
Federer insisted he was not at his best-"I haven’t wanted to chase the fines as much as I should,"he said.
Pavel was driven to distraction as it was.He had akeady lifted himself near the level he showed when he was in the top 20.But just when he looked as if he might prolong the second set, Federer struck.
He retrieved one ball from deep,outside the tramlines on the forehand side,turned and reached the next ball from short and outside the tramlines on the backhand side,and still somehow hit a controlled winner.It completed the decisive break of serve.
Pavel responded by launching a spare ball towards the sky and it landed on the whiskey tables in the lrish village below.The umpire uttered a code violation warning in little more than a whisper.It was as though he felt sympathy for the Romanian.
If Federer reaches tomorrow’s final he will play Spain’s Feliciano Lopez,whose Davis Cup debut came in the singles in the 2003 final in Melbourne,or Mikhail Youzhny,whose first Davis Cup experience was as a ball boy in the 1995 final in Moscow.
That spurred Youzhny to make a top-level breakthrough seven yearslater,and to develop perseverance which has been revealed this week in a 6-3,1-6,6-1 quarter-final win over Rafael Nadal yesterday in heat which would have made a camel protest,and in a recovery from two days’vomiting after eating Japanese seafood."My cap felt as if it weighed five kilos."he said.

The author made a special mention of Mikhail Youzhny’s win at the quarter final because______.

A.he was greatly impressed by Youzhny’s experience as a ball boy

B.he admired Youzhny’s perseverance during the match

C.Youzhny was as persevering as a camel

D.Youzhny took to Japanese seafood which made him very weak

填空题