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题目内容
Although most of the lakes have merged, salinity levels are not _____ throughout the lake systems: an upward-trending salinity gradient extends southeast from Pelican Lake to East Stump Lake, a distance of nearly 80 kilometers.
- Aknown
- Bequable
- Crising
- Dproblematic
- Eunprecedented
B显示答案
以上解析由 考满分老师提供。