资料：Dream is a story that a person watches or even takes part in during sleep. Dream events are imaginary, but they are related to real experiences and needs in the dreamer's life. They seem real while they are takingplace. Some dreams are pleasant, others are annoying, and still others are frightening. Everyone dreams, but some persons never recall dreaming. Others remember only a little about a dream they had just before awakening and nothing about earlier dreams. No one recalls all his dreams.
Dreams involve little logical thought. In most dreams, the dreamer cannot control what happens to him. The story may be confusing, and things happen that would not happen in real life. People see in most dreams, but they may also hear, smell, touch, and taste in their dreams. Most dreams occur in color. But persons who have been blind since birth do not see at all in dreams.
Dreams are a product of the sleeper's mind. They include events and feelings that he has experienced. Most dreams are related to events of the day before the dream and strong wishes of the dreamer. Many minor incidents of the hours before sleep appear in dreams. Deep wishes or fears-especially those held since childhood-often appear in dream. and many dreams fulfil such wishes. Events in the sleeper's surrounding-a loud noise, for example, may become part of a dream, but they do not cause dreams.
Some dreams involve deep feeling that a person may realize he has. Psychiatrists often use material from a patient’s dreams to help the person understand himself better.
Dreaming may help maintain good learning ability, memory, and emotional adjustment. People who get plenty of sleep-but are awakened each time they begin to dream-become anxious and restless.
This passage is mainly about______.
本题考查主旨大意。
【关键词】passage；mainly about
【主题句】第一自然段Dream is a story that a person watches or even takes part in during sleep……梦是一个人在睡觉时观看甚至参与的故事……
【解析】本题问的是“这篇文章主要关于____________。”选项A意为“梦想带给人们什么样的好处”；选项B意为“梦是什么”；选项C意为“我们睡觉的时候怎么做梦”；选项D意为“我们睡觉的时候为什么做梦”文章首句对梦下了定义，后文全部阐述的是关于梦是什么的问题。
下列关于公司的表述，正确的是（）
以下各项列举了我国常见气象灾害与其发生地区的对应关系，其中正确的一项是（）
根据电视收视率调査，看体育节目的观众中青年人比中老年人要多。
由此可推断出（）
—种海洋蜗牛产生的毒素含有多种蛋白，把其中的一种给老鼠注射后，会使有两星期大或更小的老鼠陷入睡眠状态，而使大一点的老鼠躲藏起来。当老鼠受到突然的严重威胁时，非常小的那些老鼠的反应是呆住，而较大的那些老鼠会逃跑。
以上陈述的事实最有力地支持了以下哪项假说？（）
疾病控制中心对某校髙中三个年级的学生进行抽样做视力状况调查，抽样的方法为分层抽样（按比例抽样），若高中一、二、三年级学生人数分别为626、703、780，样本容量为84，则应从离二年级抽样的学生人数为多少？（）
