1.clergy n.牧师；神职人员(priests or ministers)

例:Separation of church and state barred Protestant clergy from the role that priests assumed in Brazil.

派生词:clerical(a．牧师的；办事员的)

2.client n.委托人(a person who engages the professional advice or services of another)；顾客(customer)

例:The firm is having difficulty retaining its clients of long standing.

派生词:clientele(n.诉讼委托人，客户)

3.cliff n．悬崖，峭壁(steep, high face of rock, esp. at the edge of the sea)

联想记忆：cli（看作climb爬）+ff（像两个钩子）--用钩子在悬崖峭壁上爬一悬崖，峭壁

例:They launched themselves by jumping from cliffs, and dropping from trees.

4.clinging a.粘着的(sticky)

词根记忆：来自cling(v.粘紧，附着)

例:The workers removed the clinging vine from the brick wall.

5.clockwise a./ad.j顺时针方向白勺(地)(in the same direction as the rotating hands of a clock)

词根记忆：clock+wise(以…方向)一以钟走的方向_+顺时针方向的

例:a clockwise direction顺时针方向

6.clog v.妨碍(to obstruct)；阻塞(to block up)

联想记忆：圆木(log)一般很重，搁在c后自然是妨碍(clog)了

例:The recent surge in the number of airplane flights has clogged the nation's air-traffic control system.

7.clot n.凝块(a thickened lump formed within a liquid);v.使凝结成块(to thicken into a clot)

例:According to a study published in The New England Journa! of Medicine, aspirin prevents blood clots just as well as a commonly used and more expensive blood-thinning drug does.

派生词:cloture(n.讨论终结)

8.clurnp n.丛，簇(a group of things clustered together);v.使密集(to form sth. in a group)

词根记忆：和lump(n.块，团)一起记

例:The brim of the hat was decorated with a clump of silk flowers.

9.cluster n.（任何的）群，堆，团(number of people, animals or things grouped closely together);v.使聚集在_起(to surround sb./sth. closely)

词根记忆：clust( =clot凝成块)+er--凝块一团

例:clusters of houses房屋建筑群//clusterad suburban houses密集的郊区房屋

10.coalition n.结合，联合( union)

例:A coalition of lawyers defended the workers in court.