This paper discusses the status and trends of the films classes, the materials used in the PDP and the technology for the preparation of films.

本文对PD P中所用膜的种类、材料及成膜技术的现状、进展以及存在的问题进行了论述。

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On weekdays, our whole family is fully engaged. Father makes preparation for his classes or writing monographs or research papers;

工作日，全家都忙着干活，爸爸准备备课笔记，撰写专著与论文；

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The website is designed to answer questions such as how to apply for financial aid and where to find SAT preparation classes.

WSJ: New NYC website aims to help with college process

Tutoring companies across the city have reported a frenzy since the NNAT was announced, with families signing children up for private tutoring sessions, enrolling them in multiweek boot camp classes, and buying test preparation booklets in droves even though the test won't be administered until January.

WSJ: Big Change in Gifted and Talented Testing