题目

下列关于液泡的叙述中错误的是(    ) A.花、果实、叶片的颜色都是由液泡的色素决定的 B.液泡是单层膜包裹的囊泡状结构 C.细胞液含有生物碱、有机酸、糖类、蛋白质、无机盐等物质 D.细胞液浓度高低决定了细胞吸水能力的大小 答案:AHe was filled with envy at his ________wealth. H e decided to go down south to seek his fortune. A. brother-in-law’s        B. brother’s-in-law C. brother-in law         D. brothers-in-law
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