Vocabulary (70％3.5’each)Task one:Fill in the blanks of the following sentencesby choosinga proper word or expression provided in the box.Change the form of the word or expression if necessary.Each word or expression can be used only ONCE.1.Halliday's theoretical __________ has shown that language is a socially constructed system.2.To believe in the 'superiority' of the American system is the political ___________ in believing in the horoscope or the tooth fairy.3.This is to __________ that racism is not just a belief, but also an action.4.Museums and other ___________ of informal learning may be better suited to teach this skill than elementary schools.5.The company's problems, _____________, are certainly not unique.6.He’s speaking up and ________ himself confidently.7.All of these changes in the ________market had a dramatic effect on the labour market within Britain.8.The ethnic populations are so intermingled that there’s __________ be conflict.9.Few countries have as rich a __________ of habitat as South Africa.10.There is every sign that new Asian-Americans are just as willing to __________.11.Through imagination, we are able to _________ distant future.12.John Kennedy appealed to the idea that humans can _________ what were once considered inherent limitations.