1.crack n．强效纯可卡因(a potent form ofcocaine);v.裂开，断裂（to break, split, or snapapart）
例:The use of crack and cocaine is growing rapidlyamong workers.//In most earthquakes the Earthscrust cracks like porcelain.
2.cramped a．狭窄的(confined, restricted)；狭促的(restrained)
例:No more people could fit into the cramped elevator.//The cramped kennel was filled withtoo many dogs.
例:What scientists know about dinosaur brains comes from studies of the cranium, the bonyhouse of the brain located in the back of the skull.
例:Protecting children from the crass business world became enormously important.
5.crate n．篮，篓(an open box of wooden slats or a usually wooden protective case orfr
6.creative a．创造性的（marked by the ability or power to create）
例:Scientists typically do their most creative work before the age of forty.
7.creativity n.创造力，创作力(the ability to create)
例:Like their male counterparts, women scientists are above average in terms of intelligenceand creativity.
例:Students are less likely to give credence to history textbooks than to mathematicstextbooks.
9.credit n．信用，信任(trust)；v.把…归给(to ascribe)；把…记入贷方(to enter upon thecredit side of an account)
例:Agricultural technology is credited with having made our lives better.//Interest was creditedon the last day of each month.
10.creditworthiness n.有***接受信用贷款(financially sound enough to justify theextension of credit)
例:Members of society have varying degrees of purchasing power and creditworthiness.