多项选择题 组成核心粒的组蛋白为（）。

单项选择题 60what does Dr. Ross Cartmill mean by “the ostrich approach”(line q par a casual attitude towards one’s health conditionsB. a new therapy for certain psychological problemsC. refusal to get medical treatment for fear of the pain involvedD. unwillingness to find out about one’s disease because of fear

多项选择题 下列哪些特性使端粒酶不同于其他的DNA聚合酶？（）