GRE Text Completion: Maggoosh-GRE填空Maggoosh - B491L76JQVE7A3FZY

Spending five minutes in the sun will most likely have ____________ effect on one's skin; spending fifteen minutes, on the other hand, can lead to burning and, over time, fine wrinkles. A. a harmful B. a demonstrable C. an enduring D. an indeterminate E. a benign