The main salt in Death Valley is sodium chloride, but other salts, mostly carbonates and sulfates, also exist there.

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问题 The main salt in Death Valley is sodium chloride, but other salts, mostly carbonates and sulfates, also exist there.

选项 A、basic
B、dominant
C、native
D、visible

答案B

解析 死亡谷的主要盐类是氯化钠。不过也有碳酸盐和硫酸盐。A项basic“基础的;基本的”,B项dominant“主要的;显著的”,C项native“本国的;原产地的” ,D项visible “可见的;引人注目的”。题干后面but有转折比较之意。dominant有“首要的;占支配地位的”的意思,表示氯化钠是最主要的盐类。
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