同学你好，该知识点来自沪江网校《初中水平直达雅思6.5分【剑桥全能随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好
这道题是TRUE
Modern-day plastic preparation is based on the same principles as that patented in 1907.

也可以理解为a和b的关系，题目说的是是a=b。

第四段后面那几句 “ . .. On 13 July 1907, Baekeland took out his famous patent describing this preparation, the essential features of which are still in use today.”

still in use today就代表a一直是b，从来未变。