GRE作文新增的argument题目(4)_GRE写作

GRE作文新增的argument题目(4)

　　the following editorial appeared in a newspaper in the country of solaria.

　　the eliot valley region was primarily agricultural twenty years ago. in the past twenty years, however, many computer-chip manufacturers have opened factories there. a recent study found that water pollution in the region was worse than in any other region in the country. moreover, the computer-chip factories, which use large quantities of water to manufacture the chips, are probably responsible for the low levels of water in the regions lakes and reservoirs. therefore, if the regions computer-chip makers had limits placed on the amount of water they could use, water quality would improve.

　　the following appeared in a health newsletter.

　　according to a recent study, people with many social ties report catching colds less often than do people with few social ties. consequently, researchers conclude that having an active social life probably helps strengthen the immune system. the researchers note that catching a cold―one of a family of highly contagious viruses―gives the cold-sufferer temporary immunity to that virus in the future, but not to the many other related viruses. merely being exposed to a new cold virus, however, is not enough for a person to catch a cold, since a strong immune system can successfully fight off some new viruses. thus, in order to prevent catching a cold, people should strengthen their immune systems by becoming more active socially.