阅读下列材料

材料一：文艺复兴运动是新兴资产阶级发起的思想解放运动。……人文主义是文艺复兴时期社会思潮的核心。人文主义反对神学抬高神、贬低人的观点，反对教会束缚和封建等级观念，强调人的作用。……随着文艺复兴运动蓬勃开展，近代自然科学也产生了许多新成果。

──马世力《一本书读懂世界史》

材料二：在18世纪的启蒙运动中，一批知识界精英表现出对理性力量的最大信任。17世纪科学革命表明，宇宙间的秩序和可用数学加以证明的法则在自然界中起着作用。启蒙思想家们则认为，用类似的法则和理性来审视人类社会也是可能的。……他们对现存制度，特别是对教会的抨击是及其大胆的，他们为思想解放而斗争。……启蒙运动对欧洲大陆和北美产生了重要影响。

──（美）马文•佩里《西方文明史》

请回答：

设a，b，l均为不同直线，α，β均为不同平面，给出下列3个命题：

①若α⊥β，a⊂β，则a⊥α；

②若α∥β，a⊂α，b⊂β，则a⊥b可能成立；

③若a⊥l，b⊥l，则a⊥b不可能成立．

其中，正确的个数为（　　）

阅读下列短文, 从每题所给的四个选项（A、B、C和D）中选出最佳选项。

"Dreams (梦) may be more important than sleep. We all need to dream," some scientists say. Dreams take up about one quarter of our sleeping time. People have several dreams each night. Dreams are like short films. They are usually in color. Some dreams are like old films. They come to us over and over again. That may be because the dreamer is worrying about something. Dreaming may be a way of trying to find an answer.

    Some people get new ideas about their work from dreams. They may have been thinking about their work all day. These thoughts can carry over into dreams.

    Sometimes we wake up with a good feeling from a dream. But often we can't remember the dream. Dreams can disappear quickly from memory.

    Too much dreaming can be harmful. The more we sleep, the longer we dream. The mind is hard at work when we dream. That is why we may have a long sleep and still wake up tired.

一次数学测试后，随机抽取6名学生成绩如下：86，85，88，80，88，95，关于这组数据说法错误的是（    ）