旅遊風情:Grand Canyon(音頻文字)

世界著名的美國亞利桑那州的大峽穀可能比先前想象的曆史要短得多。新的科研顯示這一世界奇的形成僅有五至六百萬年的時間。這比先前的說法要短得多。以前的研究聲稱大峽穀已經有七千萬年曆史。以下是 BBC 科學事務記者 Jonathan Amos 發回的報道：


http://wsodprogrf.bbc.co.uk/ukchina/simp/dps/2014/01/bbc_media_english_grand_canyon_report_140131_media_english_grand_canyon_audio_au_bb.mp3

旅遊風情:Grand Canyon(音頻文字)ZT

http://www.bbc.co.uk/ukchina/simp/elt/english_now/2014/01/140131_media_english_grand_canyon.shtml
Millions of tourists are drawn each year to the Grand Canyon to see its impressive rocks, which record nearly two billion years of Earth history. Running for almost 450km and to a depth of 1,800m, it is almost too vast to take in.

Its huge scale has also been problematic for scientists who've spent years gathering data from different locations through the canyon to try to work out its true age.

Some of the most recent investigations had indicated an ancient origin, while others thought it was much younger.

Now a new study in the Nature Geoscience journal pulls it all together. It finds, yes, the Grand Canyon has very old segments, but the full system was only cut into the form we know today by the Colorado River just over five million years ago.

Quiz 聽力測驗

Where is the Grand Canyon?

 

How big is the Grand Canyon?

 

Where was the study published?

 

Which verb in the report is similar in meaning to 'collecting'?

 

 

 

Glossary 詞匯表 （點擊單詞收聽發音）

• drawn吸引
• to take in 全部收入眼底，一覽無餘
• scale規模
• problematic成問題的，棘手的

• gathering搜集
• origin起源
• segments （地）段

 

 

Quiz 聽力測驗答案

Where is the Grand Canyon?

In the American state of Arizona.

How big is the Grand Canyon?

It is almost 450km long and 1,800m deep.

Where was the study published?

It was published in the Nature Geoscience journal.

Which verb in the report is similar in meaning to 'collecting'?

Gathering.