对6.4 jijing的一点补充

天上人间

刚想起一篇阅读，前人有机井的，关于cave paiting

1，copy前人机经：

Two NR believe the cave painting was developed chromatically, from very simply ones to sophisticated ones.

Radioactive technology can measure the timing of the painting.

In a laceName w:st="on">blablalaceName> laceType w:st="on">CavelaceType>, there was not coarse painting but it was the oldest cave painting. Why? Oh, it is because different people have different talents.

2，还有一篇阅读，应该是关于天文的。一开始说到一个观点长期以来没人质疑？（有题），后来因为爱因斯坦的theory和另一个人的discover改变了。然后就在举例，用手怎样使水wave，demostrate the movement of the wave（I guess) 有题。然后就说到light wave的运动相类似，move toward the observer 称为redlight？相反地称为bluelight。后面的记不起来了。单词 approach

3，讲preserve things的，讲到cave怎样preserve things（有题），还问到tropical climate destruct the building的原因。好像前人有机井

octopus555

Thank you! Good luck!