题目

The scientist and his achievements________you told me about are admired by us all.     A. which              B. that              C. who         D. whose 答案：B下列关于细胞核的叙述，不正确是A．细胞核内存在易被碱性染料染成深色的物质B．核仁是和核糖体的形成有关的细胞器C．核孔是 RNA、蛋白质等大分子物质进出细胞核的通道D．核膜的基本骨架是磷脂双分子层