1.complacency n.自满，自得(self-satisfaction especially when accompanied by unawa-reness of actual dangers or deficiencies)

联想记忆：com(共同，所有)+place(地方)+ncy--对自己各个地方都满意一自满，自得

例:They may truly have to struggle against complacency arising from their current success.

2.complainant n.控诉者(one who complains);原告（plaintiff）

词根记忆：来自complain(v.控诉)

例:The organization acted unfairly toward the complainant in its investigation.

3.complaint n.抱怨，诉苦（expression of grief, pair' or dIssatisfaction）；疾病(a bodily ailment or disease)

词根记忆：来自complain(v.抱怨)

例:On average,9 0ut of every l,000 passengers who traveled on Avia Airlines last year filed a complaint about our baggage-handling procedures.

4.complementv.补充(to reinforce)n.补足物(something that fills up, completes, or makes perfect)；【生】（血清中的）补体

词根记忆：com(加强)+ple(装满，填满)+ment--补充

注意：compliment(v.恭维)

例:John's work complements Larson's theory.// All of the cells in a particular plant start out with the same complement of genes.

派生词：complementary(a.补充的)；complemented(a．有补助物的)

5.complex a．复杂的(complicated)

词根记忆：com(一起)+ plex(重叠，多)--重叠在一起的--复杂的

例:The most effective leaders are those who can solve complex problems by finding simple, immediate solutions.

派生词：complexity(n.复杂;复杂的事物)

6.complication n．并发症(a secondary disease or condition developing in the course of a primary disease or condition);复杂,复杂化(complexity)

词根记忆：来自complicate(v.使复杂化)

例:They have been used primarily by older adults, who are at risk for complications from influenza.

7.comply v.(with)遵循(to conform, submit, or adapt as required)

词根记忆：com( -起)+pIy(用)--大家一起都要用的--遵循

例:A good citizen complies with the laws of the country.

派生词：compliance(n.依从，顺从)

8.component n.成分(ingredient)；要素(element)

词根记忆：com(一起)+pon（放置）+ ent--放置在一起的东西一成分

例:The most effective way for managers to assign work is to divide complex tasks into their simpler component parts.

9.compose v.(of)组成(to form by putting together);使安定(to calm)

词根记忆：com(一起)+ pose(放)--放到一起--组成

例:The stars in the Milky Way galaxy are composed of several different types of gas.

派生词：composer(n.作家，设计者)；composition(n.组成，合成物；作文)

10.composition n.作文;作曲；构成(the manner in which sth. is composed)

词根记忆：来自compose(v.组成，构成；作曲)

例:Geochemist John Gurney showed that garnets with this composition were formed only in the diamond-stability field.

同根词：composite(n.复合材料；a．复合的)