短文朗读并回答06（本节8分）

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综合训练（六）朗读短文-Mr.Liu.m4a

00:56 来自刘凯老师

The blackboard is something that is found in almost every school classroom. However, it is actually a recent invention. In the past, students and teachers would write on individual tablets made of stone or wood because paper and ink were very expensive.

Because everyone had their own small tablet, teachers had no way to present a lesson to their whole class, meaning they had to go to each individual student. It was not until 1801 that a teacher invented the first modern blackboard. He made it by hanging a large thin piece of stone on the classroom wall.

Even though some schools have introduced some technology into the classroom, blackboards still have advantages over complex modern technologies. They are cheap to make and effective. Another obvious advantage is that they are easy to use.

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因为每个人都有自己的小平板电脑，老师没有办法向全班展示一堂课，这意味着他们必须去找每个学生。直到1801年，一位老师才发明了第一块现代黑板。他在教室的墙上挂了一块又大又薄的石头。

黑板几乎在每个学校的教室里都能找到。然而，它实际上是最近的一项发明。在过去，由于纸和墨水非常昂贵，学生和老师会在石头或木头做成的单独的平板上写字。

尽管一些学校在课堂上引入了一些技术，但黑板仍然比复杂的现代技术有优势。它们制造成本低，效果好。另一个明显的优点是它们易于使用。