原因
1.A number of factors are accountable for this situation.
A number of factors might contribute to the phenomenon.
2. The answer to this problem involves many factors.
3. The phenomenon mainly stems from the fact that...
4. The factors that contribute to this situation include...
5. The change in ...largely results from the fact that...
6. We may blame ...,but the real causes are...
7. Part of the explanations for it is that ...
One of the most common factors is that ...
Another contributing factor is ...
Perhaps the primary factor is that
But the fundamental cause is that
GRE写作范文——Cells and Temperature
GRE Issue高频提纲——政治类(六)
GRE写作范文——Collectibles
GRE写作绝佳300句(三)
GRE写作范文——The source of Energy
GRE写作范文——Oil Refining
GRE写作素材之:广告手段与广告价值
GRE写作范文——Plate Tectonics and Sea-floor Spreading
GRE Issue高频提纲——政治类(一)
GRE写作范文——Bacteria
GRE Issue高频提纲——教育类(二)
GRE写作绝佳300句(十一)
GRE写作范文——American black bears
GRE写作范文——Changing Roles of Public Education
GRE写作范文——Telecommuting
GRE写作范文——Suburbanization
GRE写作范文——The origin of Refrigerators
GRE写作范文——Coal-fired power plants
GRE写作范文——Obtaining Fresh water from icebergs
GRE写作范文——Icebergs
GRE写作绝佳300句(六)
GRE写作范文——Cohesion-tension Theory
GRE写作绝佳300句(五)
GRE Issue高频提纲——学习类(五)
GRE写作范文——A Rare Fossil Record
GRE写作范文——Botany
GRE写作绝佳300句(九)
GRE写作绝佳300句(二三)
GRE写作范文——Vision
GRE Issue高频提纲——政治类(三)
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