1.crack n．强效纯可卡因(a potent form of cocaine);v.裂开，断裂（to break, split, or snap apart）

例:The use of crack and cocaine is growing rapidly among workers.//In most earthquakes the Earth's crust cracks like porcelain.

2.cramped a．狭窄的(confined, restricted)；狭促的(restrained)

词根记忆：cramp(铁箍，夹子)+ed--箍得很紧的--狭窄的

例:No more people could fit into the cramped elevator.//The cramped kennel was filled with too many dogs.

3.cranium n.头颅(braincase)；头盖(skull)

例:What scientists know about dinosaur brains comes from studies of the cranium, the bony house of the brain located in the back of the skull.

4.crass a．粗坐的(gross)；愚钝的(stupid)

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 or framework for shipping)

联想记忆：编篮子( crate)也是一种创造(create)

6.creative a．创造性的（marked by the ability or power to create）

词根记忆：来自create(v.创作；创造)

例:Scientists typically do their most creative work before the age of forty.

派生词：creatively(ad.创造性地；有创造力地)；creativity(n.创造力)

同根词：recreate(v.再创造；娱乐，消遣)

7.creativity n.创造力，创作力(the ability to create)

词根记忆：cre(生长)+tivity--生长出新东西--创造力

例:Like their male counterparts, women scientists are above average in terms of intelligence and creativity.

8.credence n．信任(belief)

词根记忆：cred(相信)+ence--相信--信任

例:Students are less likely to give credence to history textbooks than to mathematics textbooks.

同根词：credibility(n.可信，可靠)；accredit(v.信任，授权于)

9.credit n．信用，信任(trust)；v.把…归给(to ascribe)；把…记入贷方(to enter upon the credit side of an account)

词根记忆：cred(相信)+it--相信

例:Agricultural technology is credited with having made our lives better.//Interest was credited on the last day of each month.

派生词:discredit(矿怀疑)

10.creditworthiness n.有资格接受信用贷款(financially sound enough to justify the extension of credit)

例:Members of society have varying degrees of purchasing power and creditworthiness.