Deadly substances found 美國實驗室發現被遺忘致命病毒

美國政府工作人員在實驗室裏發現了六種致命病毒樣本，其中一些病毒已存活了超過一個世紀。這些病毒是在最近一次搜尋行動中發現的。今年七月在華盛頓的一家研究所裏，工作人員無意中發現了天花病毒樣本，在此之後，政府展開了一系列搜尋致命病毒的行動。以下是 Joanna Jolly 的報道:
Workers searching the government premises found six different types of microbes classed as being so dangerous they're required to be stored at high-secure facilities.
Instead, they were found in regular laboratories. They included bacteria that cause the plague and nerve toxins that cause botulism. A vial of the highly poisonous toxin ricin was also found, dating from nearly a century ago.
Authorities said although the microbes had not been stored correctly, they had been properly sealed, so posed no danger to staff. They have all been destroyed.
Quiz 測驗
1. Who did the laboratories where the microbes were found belong to?
2. Which words in the report describe tiny living things that can cause diseases such as the plague?
3. True or false? One poisonous substance that was discovered was about 100 years old.
4. Why were the substances not dangerous to staff working?

Glossary 詞彙表 （點擊單詞收聽發音）
premises（公司或機構使用的）辦公場所
microbes微生物，細菌
facilities（有特別裝置的）場所
the plague瘟疫
toxins毒素
botulism肉毒桿菌中毒
vial（裝藥品或其它液體的）小瓶
posed造成（威脅，危險）

資料來源:
http://www.bbc.co.uk/ukchina/trad/elt/english_now/2014/09/140912_media_english_deadly_substance_found.shtml