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题目内容双击单词支持查询和收藏哦～
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.
- A.known
- B.equable
- C.rising
- D.problematic
- E.unprecedented
B显示答案
以上解析由 考满分老师提供。
