重點單詞：
1、blast
n. 爆炸；沖擊波；一陣
vi. 猛攻
vt. 爆炸；損害；使枯萎
250 people were killed in the blast.
250人在這次大爆炸中喪生。
2、terrific
adj. 極好的；極其的，非常的；可怕的
There are some terrific programs out there, but they’re still too far and few between.
現在有了一些了不起的方案，但方案之間仍然還是相隔遙遠且較少。
3、contaminate
vt. 污染，弄臟
Have any fish been contaminated in the Arctic Ocean?
北冰洋里有魚受到污染了嗎?
4、precaution
n. 預防，警惕；預防措施
vt. 警惕；預先警告
Could he not, just as a precaution, move to a place of safety?
難道他不能就當是一種防范搬到一個安全的地方去嗎？
重點短語：
1、call out
喚起；出動；大聲叫喚
Colombia has called out the army and imposed emergency measures.
哥倫比亞已下令召集軍隊，并強制執行了緊急措施。
考考你（翻譯）：
1、有毒化學品有爆炸后進入空氣的危險。
2、普吉特海灣周圍海域的污染可能才開始。
3、銀行還采取了另一預防措施.
答案下期公布：
上期答案：
1、I knew very well that the problem was more complex than he supposed.
2、His performance yesterday morning assured him of a record eighth medal.
3、You will have to go to your headquarters; the officers there will look after you.