1.candidate n.候选人(a person who applies for a job or is nominated for election);投考者(a person taking an examination)
联想记忆：can(能)+did（做）+ate--能做的人--候选人；投考者
例:To win the election,acandidate needed to receive more than 50 percent of the votes.
派生词：candidacy(n.候选资格)
2.cannon n.加农炮大炮(a large heavy gun usually mounted on a carriage)
词根记忆：发音记忆
例:An ancient cannon sat in the middle of the town square.
3.canopy n．顶棚（hanging cover forming a shelter above a throne or bed,etc．）；树冠层（the uppermost spreading branchy layer of a forest）
例:tree canopy树冠
4.canyon n.峡谷（a long, narrow valley between cliffs)
例:Those who have visited the Grand Canyon have typically seen layers of sediment in the gaping canyon.
5.capacity n.最大容量（ability to hold or contain sth.）；最大生产量(power to produce sth.)；能力（aptitude, ability)
词根记忆：cap(拿，容纳)+acity--最大容量
例:memory capacity内存容量//operate at full capacity满负荷运转
派生词：incapacity(n.无能力)
6.capitalize v.资本化(to convert sth. into capital);获利(to profit);利用(to use sth. to ones own advantage)
词根记忆：来自capital(n.资本)
例:Seeking to capitalize on the books success, they plan to produce a movie sequel based on the books.
capitalism(n．资本主义)；capitalization(n.资本化)
7.capsule n．胶囊(small soluble case containing a dose of medicine and swallowed with it)
联想记忆：cap(帽子)+sule(看作seal密封)一封在帽状物中一胶囊
例:Painkillers come in tablets and capsules.//The nematodes can lie dormant for several years in their cysts, which are protective capsules.
8.captivate v.迷住，迷惑，吸引(to attract)
词根记忆：capt(抓住)+ivate --抓住--迷住
例:Most economists in the United States seem captivated by the spell of the free market.
9.captive n.俘虏(one held as a prisoner)
词根记忆：capt(抓)+iVe(…的)--被俘虏的--俘虏
例:The captor also benefited financially by having his captive raise the ransom himself.
同根词：captivity(n.监禁，束缚)；captor(n.捕捉者，逮捕者)
10.capturev.捕捉(to catch)；占领(to gain control of)；吸引，赢得(to gain or win especially through effort)
词根记忆：capt（抓住）+ure--捕捉;占领
例:Pterosaurs had to fly in order to capture prey．//The company employed a new strategy to capture foreign markets.//The major party is likely to capture much more than half of the votes.