1 We each has to hand in a paper on the topic of environment before the end of this term.(1)____
译文:这个学期期末之前,我们每个人都必须上交一篇有关环境话题的论文。
2. Antique auctions have become popular in the United States because a steadily increasing awareness of the investment value of antiques.(2)____
译文:由于美国人对古董投资价值的意识稳步提高,在美国古董拍卖已变得流行起来。
3. Our urge to classify different life forms and give us names seems to be as old as the human race.(3)____
译文:我们给不同生命形式进行分类并命名的欲望似乎同人类历史一样久。
4.By studying geometry, students can leam what to develop logical arguments through deductive reasoning.(4)____
译文:通过学习几何学,学生能够学会如何通过演绎推理来进行逻辑辩论。
vt. 分类,归类