Module 5 Explanations for new words and phrases1. expand vi. become or make larger or more extensive 扩大/扩充/扩展/膨胀；伸展/开,张/展开 e.g. expand his chest 扩胸 expand trade/export 扩大贸易/出口Their business expanded into other hotels and properties. 业务扩展到了其他旅馆和房地产。The ranks of the teachers are constantly expanding. 教师队伍日益扩大了。He does exercises to expand his chest. 他做体操扩胸 Metals expand by heat. 金属受热而膨胀。 expand with heat 热胀 Many flowers expand in the sunshine. 花儿在阳光下绽放。2. contract vi. decrease in size, number, or range 收缩/缩小/缩短/缩紧；和……订合同;When you heat a metal, does it contract or expand? 当你给金属加热时,它会收缩还是膨胀？Metal contracts as it becomes cool. 金属冷却时体积缩小。 contract with cold 冷缩Generally speaking, a body will expand when heated and contract when cooled 物体热涨冷缩We contracted with a shoe factory for 4000 pairs of shoes. 和鞋厂签订了份 4000 双鞋的合同。He made a two-year contract of employment with the firm. 他和公司签订了两年的雇用合同。 vt./vi. catch or develop (a disease or infectious agent) 染上；感染；得（病）Three people contracted a killer virus. 三个人感染了一种致命的病毒。Bad habits are easy to contract. 坏习惯很容易养成。n. 契约/合同 conditional contract 附条件的合同 contract law 合同法 purchase contract 购货合同make a contract with 与…签合同 sign a contract 签署合同 carry out a contract 履行合同cancel a contract 取消合同 break a contract 违反合同 by/on contract 按照合同；依约You should read the carefully before you sign it.A. contrast B. contact C. contractD. conflict考查名词词形、词义辨析。 contract 合同；contrast 对照，对比；contact 联系，接触；conflict 冲突。3. substance n. 物质/材料；主旨/宗旨/要旨；实质/本质What is this substance? 这是什么物质？ Salt...
