大学体验英语3第三版课后答案.pdf

大学体验英语 3 Unit 1 4. Fill each of the blanks with an appropriate word. I found a tree frog in my studio some months ago. I took it to my greenhouse , as I thought it would be a better place for the frog.But it came back and insisted taking the residence in the studio. Why? I couldn ’t get an idea. Then, after five months of being together, we seemed to be able to communicate with each other. It may sound wired , but I did feel I came to understand what it wanted me to do. The frog came to me probably attracted by the humming tone of my computer, which sounded like that of other tree frogs, or with a message to tell me that frogs were dying around the world because of their sensitivity to the pollution and global climate change. As frogs are an indicator“ species , what has happened to them may happen to us, if we” sit back and do nothing. We must act now, or it would be too late. 六、 cup (v.) audio boundary decade directly 使成杯状（捧 声音的，听觉的 分界线 十年 直接的 起） subtle focus overtake species tone 细致的，细微 集中注意力 追上，赶上 品种，物种 音色，音质 的 1. The essayist language’s expresses rich and subtle meanings. 散文的语言表达丰富而细微的含义。 2. The stockbrokers were overtaken by the sharp drop in the stock market last Tuesday. 股票经纪人在上周二股票下降的时候投入的股票。 3. Biologists