71. People in prehistoric times created paints by grinding materials such as plants and clay into power and then adding water. 71.史前的人们制造颜料是将植物和泥土等原料磨成粉末，...
61. Buyers and sellers should be aware of new developments in technology can and does affect marketing activities. 61. 购买者和销售者都应该留意技术的新发展，原因很简单，因为技...
51. Using many symbols makes it possible to put a large amount of inFORMation on a single map. 51. 使用多种多样的符号可以在一张地图里放进大量的信息。 52. Anarchism is a term d...
41. The annual worth of Utah ’s manufacturing is greater than that of its mining and farming combined. 41. 尤它州制造业的年产值大于其工业和农业的总和。 42. The wallflower is so...
31. Although apparently rigid, bones exhibit a degree of elasticity that enables the skeleton to withstand considerable impact. 31. 骨头看起来是脆硬的，但它也有一定的弹性，使得骨骼...
21. Eliminating problems by transferring the blame to others is often called scape-goating. 21. 用怪罪别人的办法来解决问题通常被称为寻找替罪羊。 22. The chief foods eaten in an...
11. Acids are chemical compounds that, in water solution, have a sharp taste, a corrosive action on metals, and the ability to turn certain blue vegetable dyes red. 11. 酸是一种化合物，它在溶...
1. Typical of the grassland dwellers of the continent is the American antelope, or pronghorn. 1. 美洲羚羊，或称叉角羚，是该大陆典型的草原动物。 2. Of the millions who saw Haley’...
1）It is the first / second time…. that…结构中的从句部分，用现在完成时。 It is the first time that I have visited the city. It was the third time that the boy had been late. 2）T...
虚拟语气：假设语气的特殊句型－在线英语听力室...
