38. "In the age of television, reading books is not as important as it once was. People can learn as much by watching television as they can by reading books." 【应该是个高频,我昨天还看了看,可是今天写得......惨那】
【注:下边这个不太确定,但是我感觉应该是这个,因为太长,我只是看了开头几个words,应该是这个】
26. "Most people would agree that buildings represent a valuable record of any society's past, but controversy arises when old buildings stand on ground that modern planners feel could be better used for modern purposes. In such situations, modern development should be given precedence over the preservation of historic buildings so that contemporary needs can be served."
Argument71.
Copper occurs in nature mixed with other minerals and valuable metals in ore, and the proportion of copper in the ore can vary considerably. Until fairly recently, the only way to extract pure copper from ore was by using a process that requires large amounts of electric energy, especially if the proportion of copper in the ore is low. New copper-extracting technologies can use up to 40 percent less electricity than the older method to process the same amount of raw ore, especially when the proportion of copper in the ore is high. Therefore, we can expect the amount of electricity used by the copper-extraction industry to decline significantly.