自考英语2 Unit1 TextA.ppt

* Valid Valid reason/argument/criticism/assumption a reason, argument etc that is based on what is reasonable or sensible: Police officers must have a valid reason for stopping motorists. 生病是不去上班的正当理由。 Illness is a valid excuse for being absent from work. --Invalid a contract, ticket, claim etc that is invalid is not legally or officially acceptable [≠ valid]: Without the right date stamped on it, your ticket will be invalid. * Credible credible explanation/story/account etc He was unable to give a credible explanation for his behaviour. Her excuse was barely credible. 确保资料来源可靠。 Be certain that the sources are credible. --incredible too strange to be believed or very difficult to believe [= unbelievable]: Its incredible how much Tom has changed since he met Sally. * Einstein Albert Einstein was a German-born theoretical physicist who developed the general theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics量子力学) While best known for his mass–energy equivalence 质能方程formula E = mc2 (which has been dubbed the worlds most famous equation), he received the 1921 Nobel Prize in Physics for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect光效应“ The latter was pivotal in establishing quantum theory. * Landmark adj./n. one of the most important events, changes, or discoveries that influences someone or something: The discovery of penicillin(青霉素） was a landmark in the history of medicine. landmark decision/case/ruling/achievement The Supreme Court issued a landmark decision in January 2001. 关于物理学科中里程碑式的重大成就。 Landmark achievements in physics. * Relevant Relevant documents were presented in court. relevant to What experience do you have that is relevant to this position? 我们收到了所有相关信息。 We received all the relevant information. --irrelevant Were focusing too much on irrelevant details. * Current the current President In its current state, the car is worth ￡1,000. 他们提出了克服目前困