● Title Title通常为名词性词组、短语。一般可分为以下几类: 一,以研究内容命名 SYSTHESIS OF 2-0-PROTECTED GLYCEROL DERIVATIVES Ring-Opening Polymerization of Cyclic Carbonates by Alcohol-Acid Catalyst 二以研究对象命名 A New, Crystalline High Melting Bis(hydroxymethyl)polycarbonate and Its Acetone Ketal for Biomaterial Applications Microdomain structure in polylactide-block-poly(ethylene oxide) copolymer films 三以研究内容、研究对象综合命名 Poly(ethylene carbonate)s, part I: Syntheses and structural effects in biodegradation Hydrolytic degradation of tyrosine-derived polycarbonates, a class of new biomaterials. Part I: Study of model compounds
2008年6月全国大学英语四级考试真题和答案 写作部分(9:009:30) Part I Writing(30 minutes) Directions: For this part, you are allowed 30 minutes to write a Letter of Apology according to th utline given below. You should write at least 120 words following the outline given below in Chinese