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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】原核生物基因组有很多不同于真核生物基因组的特点
A.
染 色体 DNA 不和组蛋白结合形成核小体
B.
单个染色体，一般呈环状
C.
具有大量的非编码序列
D.
具有多个 DNA 复制起点
【单选题】Passage Two In 1997, devotees of home electronics eagerly awaited the DVD player, a new device that could play movies without videotape, and with greater clarity. It caught on even faste...
A.
die economic realities of its practicality
B.
robust economic growth
C.
economic problems of hi-tech companies
D.
ignorance of the technology