题目内容

机关、单位执行上级确定的国家秘密事项，需要定密的，根据()确定。

A. 工作需要
B. 所执行的国家秘密事项的密级
C. 领导指示

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下列哪种病毒是DNA病毒

A. 冠状病毒
B. 反转录病毒
C. HCV
D. HIV
E. 腺病毒

存储、处理国家秘密的计算机信息系统按照涉密程度实行()保护。

A. 分类
B. 统一
C. 分级

人类基因组的组织特点描述不正确的是

A. 功能相关的基因常散在分布于不同的染色体上
B. 基因组含重复序列
C. 基因组中各个基因的大小和内部组织的差异不大
D. 每个结构基因都有单独的调控序列

Are There Truths in Dreams？ Imagine waking up after dreaming (dream) about a terrible plane crash. The next day you will make a plane journey that you have（41）(plan) long before. Will you get on the plane？ A survey shows that you may not cancel your trip. But your dream will probably influence your（42）(thought) during the journey. You may feel（43）(worry) and find the trip much（44）(long) than before. So dreams may influence what we are（45）(real) doing while we are awake. The explanation of dreams is still a(n)（46）(clear) area. A team of researchers are entering a new field of studies: Do dreams actually influence our（47）(behave)？ Over the past few years, they have（48）(do) studies in different cultures and found out that dreams contain some（49）(hide) truths: dreams affect the way people live and work. But researchers also tell people not to be（50）(easy) influenced by their dreams. .
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