意群训练:It is not known how rare this resemblance is,or whether it is most often seen in inclusions of silicates such as garnet,whose crystallography is generally somewhat similar to that of diamond; but when present,the resemblance is regarded as compelling evidence that the diamonds and inclusions are truly cogenetic.
GRE阅读长难句的问题并不是一天两天就能解决的,需要考生的坚持和日常的积累。
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