六级Just randomly ask a student what he or she is busily engaged in doing, quite possibly, you would get the answer that he or she is preparing for a certificate of some kind.
只要随机问一个学生他或她正忙于做什么,很有可能,你会得到的答案是他或她正在准备某种证书。
2011年6月英语六级真题
四级Every winter, millions of fridges hum away continuously, and at vast expense, busily maintaining an artificially-cooled space inside an artificially-heated house-while outside, nature provides the desired temperature free of charge.
每年冬天,数以百万计的冰箱都会不断嗡嗡作响,花费巨大的代价,在人工供暖的房子里忙于维护人工制冷的空间,而在室外,大自然免费提供所需的温度。
1997年6月大学英语四级(CET-4)真题
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