2017年12月23日北京鼎钧GRE作文机经.

　　考试时间：12/23/2010

　　考试地点：北京 鼎钧大厦

　　ISSUE 1: 非高频，在120以后，没有记下来

　　ISSUE 2: NO.43

　　To be anfective leader, a public official must maintain the highest ethical and moral standards.

　　ARGUMENT: NO.207.

　　Itis known that in recent years, industrial pollution has caused the Earth&aposs ozone layer to thin, allowing an increase in the amount of ultraviolet radiation that reaches the Earth&aposs surface. At the same time, scientists have discovered, the population of a species of salamander that lays its eggs in mountain lakes has declined. Since ultraviolet radiation is known to be damaging to delicate tissues and since salamander eggs have no protective shells, it must be the case that the increase in ultraviolet radiation has damaged many salamander eggs and prevented them from hatching. This process will no doubt cause population declines in other species, just as it has in the salamander species.