51.childish, childlike
　　childish幼稚的。如：It was very childish of him to lose his temper over something so unimportant.
　　childlike孩子般天真的。如：When she won the gold medal, there was childlike smile on her face.
　　52.choose, pick, select, elect
　　choose是一常用词，表一般的“选择”。
　　pick通常用于不需要认真权衡，对比就能做出决定。
　　select侧重“在同类的许多东西中，进行有斟酌的精选”。
　　elect指选举或用其他方法推选人。
　　53.cloth, clothing
　　cloth布。如：I need three yards of cloth to make a suit.
　　clothing衣服(总称)。如：You’d better give all the old clothing away.
　　54.complex, complicated
　　均可表“复杂”。
　　complex为常用词。
　　complicated为正式用词，表由于组成部分太多，相互关系太复杂而不能理解，语气很强。
　　55.compose, consist, constitute
　　compose为常用词，常用被动语态，如用主动语态，主语应用复数形式。如：Twelve men compose a jury.(十二人组成陪审团。)
　　consist表一个整体由几个部分组成(只能用主动语态)。如：The United Kingdom consists of Great Britain and Northern Island.(联合王国是由大不列颠及北爱尔兰组 成。)
　　constitute为正式用词，与consist相反，表由哪些部分构成整体。如：Twelve months constitute a year.(一年有十二个月。)