英语六级考试将在2013年6月份进行，如果同学们没有太多的时间把5500词汇都背诵下来，那么就来奋力搞定核心词汇吧，这些词汇都是在历年考试中经常出现的单词，同学们一定都要记住并且会用。

　　ban v.禁止

　　The machines contain high levels of lead and otherhazardous substances, and are already banned from Californialandfills (垃圾填埋场).( 05-1)

　　barrier n.障碍(07-12)

　　Young blacks, whose unemployment rate stands today at 50 96, will find another barrier infront of them.(90-6)

　　She wrote poetry that broke through national barriers.(06-6 听)

　　be aware of 1.知道(08-12)

　　Workers should be aware of the potential dangers at the workplace.

　　behavior n.举止, 行为

　　Human behavior is mostly a product of learning, whereas the behavior of an animal dependsmainly on instinct. (2008.6)

　　人类的行为主要是学习观察的结果，而动物的行为则主要依赖于本能。

　　benefit n.利益促进或增强福利的东西;好处(07-12)

　　E-books have so many benefits that they will replace traditional books. (08-6)

　　bias n.偏见;成见(, 00-6)

　　The Oxford dictionary can therefore stand more vigorous scrutiny for cultural bias than theLongman publication because the latter does not hesitate about viewing the rest of the world fromthe cultural perspectives of the English-speaking world.( 96-6)

　　Researchers who are unfamiliar with the cultural and ethnic groups they are studying must takeextra precautions to shed any biases they bring with them from their own culture. (02-6)

　　biotech n.生物工艺学(05-6,07-6)

　　She now works in the biotech forestry division of a major paper company. (07-6)

　　blame v.谴责;归咎(08-6, )

　　The mother didn’t know who to blame for the broken glass.(90-1)

　　board n.木板 vt.(收费)供…膳食;搭乘(飞机，船等)交通工具(07-12)

　　Susan stood motionless at the end of the diving board, hands at her side, heels slightly raised, every muscle anticipating action. (92-6)

　　When you board a plane, a machine may soon be scanning more than your bags—it may bestudying your face. (93-1)

　　burden n.负荷;负担(99-6,00-6)

　　British universities, groaning under the burden of a huge increase in student numbers, arewarning that the tradition of a free education is at risk.(99-6)