题目内容

It________heavily for 2 weeks and the farmers were very worried.

Ahas been raining Bhad been raining

Chas rained Dhad been rained

 

B

【解析】考查时态与语态。句意:大雨已经下了两周,农民们非常担心。由were可知,事情发生在过去,故用过去完成进行时,表示动作从过去另一时间开始,一直延续到过去另一时间,可能还要继续下去。

 

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It's hardly surprising that weather is a favorite topic for so many people around the world—it affects where we choose to live, what we wear, our moods, and perhaps even our national characteristics.Studies have shown that changeable weather can make it difficult to concentrate, cloudy skies slow down reaction, and hotdry winds make many people bad?tempered.

If you live in a place like Britain, where the weather seems to change daily if not hourlyyou could be forgiven for thinking that the weather is random.In fact the weather is controlled by systems which move around areas of the globe.In the UK the weather depends on depressions (低压气流), often called lowsand anticyclones(反气旋)also known as highs.These systems start in the Atlantic Ocean, and make their way across the British Isles from the west to the east.Highs bring sunny weather, while lows bring rain and wind.In modern times, human activities seem to be altering weather patterns.Gases produced by heavy industry change the temperature of the earth's surfaceand affect cloud formation.Some researchers say that factories in Europe and North America may have been one of the causes of the droughts in Africa in the 1980s.

The human race has always tried to guess the weatherespecially in areas of the world where there are frequent changes.Traditional rhymes point to early attempts to identify weather patterns; popular poems include

Red sky at night, shepherd's delightred sky in the morning, shepherd's warning.

Flies will swarm before a storm.

Rain before 7clear by 11.

While folk wisdom can provide a guide to help forecast weather, today's methods of prediction increasingly rely on technology.Satellites, balloonsships, aircrafts and weather centers with sensitive monitoring equipment, send data to computers.The data is then processed, and the weather is predicted.Howevereven this system cannot predict weather for longer than about a week.

1.When weather keeps changing________.

Apeople become bad?tempered

Bpeople's reaction slows down

Cpeople find it hard to focus on their work

Dpeople find it easy to focus on their work

2.The weather in Britain is________.

Arandom Bmoist

Cdepressing Dsatisfying

3.According to a traditional rhyme, if there is a red sky at night, the next day will be________.

Awindy Brainy

Cfine Dsnowy

4.Which of the following statements is TRUE?

AAnticyclones often bring rain and wind.

BWeather forecasting has been done for a long time.

CWeather could never be predicted.

DModern methods of weather prediction are developed from folk wisdom.

5.What is mainly talked about in the second paragraph?

AChanges in weather.

BWeather in Britain.

CAfrican droughts.

DResearch on weather.

 

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