正确答案： An offer is a proposal addressed to specific persons indicating an intention by the offeror to be bound to the sale or purchase of particular goods for a price..

正确答案： A 本题要求填入一个关系代词引导主语从句，并在主语从句中作主语，所以选 what。

正确答案： A appreciate doing sth. 愿意，喜欢做某事。句意：人们喜欢同他交谈是因为他既博学又幽默。

正确答案： B 本题属于动词不定式复合结构做后置定语。 in 不可省略。句意：他买了一套房子给孩子们住。

正确答案： D regret 后所跟动词有 to do 与 doing 两种形式，不定式表示“为做某事而遗憾”， doing 表示“为做过某事而后悔”。“ having done ”则更强调动作已发生而无法挽回。

正确答案： A copyright is title to certain pecuniary rights and, in most countries, certain moral rights for a specified period of time.

正确答案： Private international law is applied to the laws governing conduct between people (and corporations) from different states.

正确答案： D 本题考查介词词组的词义辨析。四个词组分别表示“因此”、“务必”、“相比之下”和“相反”之意。

正确答案： A bill of lading I san instrument issued by an ocean carrier to a shipper with whom the carrier has entered into a contract for the carriage of goods.

正确答案： A secret relationship between two or more persons, one of whom carries on a business in his name alone without revealing the participation of the other who has limited personal liability..