71. boom ①繁荣；②激增（baby boom 婴儿潮）
72. bored ①无聊的；②烦人的
boredom n.无聊
be/get bored with = be tired of = be fed up with 对...厌烦
73. bow v.①鞠躬；②低头；n.③蝴蝶结
bow to sb 向某人鞠躬/低头
74. branch ①树枝；②分公司；③支流
75. break - broke - broken v.①打破；n.②休息
break one’s heart 伤某人的心
break the silence 打破沉默
break the law 违反法律
break the bad habits 改掉坏习惯
break down ①出故障（汽车，电脑，人）；②分解（plastic）；③推倒（barrier）
break in ①非法闯入；②插话
break into ①非法闯入；②插话；③突然...起来（break into tears = burst into tears）
break out （火灾，战争）爆发
break through 突破
break up 分开
take a break 休息一下
76. breed - bred - bred ①（动物）繁殖；②（植物）培育；③（人）养育
77. bridge n.①桥；v.架桥；缩短（narrow）
bridge the differences/gap 缩短差距
78. bright ①光明的；②快乐的
a bright face 快乐的面容
a bright future = a promising future 光明的未来
79. build ①v.建筑；②身形
a strong build 身强体壮
80. business ①商业；②事物
mind one's own business 管好自己的事
none of your business 不关你的事
81. but ①但是；②除了（except）
have no alternative/choice but to do 除了做某事别无选择
anything but 决不
nothing but 仅仅
but for 要不是
But for your generous help, I would not have made such great progress. 要不是你慷慨的帮助，我不会取得这么大的进步。
82. calm ①冷静的；②平稳无波的
calm sb down 冷静下来
peaceful 和平的
quiet 安静的
still 静止的
83. can - could - could ①能；②罐头（tin）
a can of beer 一罐啤酒
84. capital ①首都；②大写字母；③资本
85. capture ①捕捉（catch）；②（用图片视频）拍摄记录
86. case ①情况；②病例；③案件；④盒子（box）
in case 以防万一（加句子）
in case of 以防万一（加短语）
if that is the case 如果是那样的情况
in no case 决不（on no account）
in any case 无论如何
in this case 在这样的情况下
87. cast - cast - cast ①投掷；②选派演员
cast a shadow on 投下阴影
88. cause n.①原因；②事业；v.③导致
cause and effect 因果
89. celebrity 名人
90. chair ①椅子；②主席
91. challenge ①挑战；②质疑
challenge the authority 质疑权威
challenging 有挑战性的
92. chance ①机会（opportunity）；②风险（risk）
by chance = by accident 偶然地
take chances = take risks 冒险
The activity provides a good chance for me to present my talent. 这次活动给我提供了一个好的机会展示才能。
93. change ①改变；②零钱
94. channel ①海峡；②频道；③渠道；方法
through the channel 通过某种方法
95. character ①角色，人物；②文字；③性格特点
Chinese character 汉字
96. charge n.①负责；②控告；③费用；④充电
in charge of 负责
take charge of 负责
free of charge 免费
charge 钱 for sth 要价...
charge sb with sth = accuse sb of sth 控告某人...
97. chart n.图表；v.用图表记录
98. check ①检查（examine）；②支票（cheque）
check in 登记入住
check out ①结账退房；②查看
check off 清点
99. choke ①噎住；②堵住
be choked with 被堵住 = be blocked in
100. circle n.①圆圈；②循环；③v.环绕
101. claim ①声称；②索要；③夺走生命
claim to do 声称要做 / claim to have done 声称做了
claim one's life 夺走生命
102. class ①班级；②课（course）；③等级；阶级
take classes/courses 上课
upper class 上层阶级
world-class 世界级的
business class flight 商务舱；economy class flight 经济舱
103. close v.①关闭（shut）；②adj.靠近的
keep a close eye on 留心，照看
104. cloud n.云；v.使模糊
The clouds soon cleared away.
105. coach n.①教练；②大巴车；v.③训练（train）
106. column ①圆柱体；②专栏
107. come ①来；②达到（come to an end/conclusion/agreement 结束/达成结论/达成一致）；③渐渐开始（come to realise 渐渐意识到）；④成为（come true 实现）
come across = run into = encounter 偶遇
come back 回来（happy memories come back）
come down ①下来（prices come down）；②流传（pass down）
come on ①加油；②过来；③得了吧
come out ①出来；②出版（无被动）
come up with = put forward = bring up 提出
come about 发生
when it comes to doing 当谈到
When it comes to choosing a city to live in China, I strongly recommend you to take Tianjin into account.
108. comfort ①舒适；②安慰
comfort zone 舒适区
109. commit v.①犯；②承诺（promise）；③奉献（devote）
commit a crime 犯罪
commit a suicide 自杀
be committed to doing = be devoted to doing 献身做
110. commitment n.①承诺（promise）；②奉献（devotion）
make a commitment 作出承诺
111. company n.①公司（firm）；②陪伴
112. compose v.①组成；②作曲
be composed of = be made up of = be comprised of = consist of（无被动）由...组成
The class consists of 20 boys and 30 girls. (不用被动)
113. composition n. ①组成；②乐曲；③作文
114. concern n.①关心，担心；②关系；v.①有关；②使担忧
Thanks for your concern. 谢谢你的关心
concerned adj. ①关心的，担心的；②有关的
be concerned about = be worried about 担心，关心
be concerned with 和...有关
as far as I am concerned = in my opinion 在我看来
concerning prep. 关于（about）
115. concrete adj.①具体的（反abstract）；②确切的；n.③混凝土
concrete evidence 确切的证据
116. conduct v.①执行，做（carry out）；②指挥；③传导
conduct/carry out a research 做研究
117. conductor n.①指挥；②经理；③售票员（汽车）
118. confuse v.①使困惑；②弄混（puzzle）
confuse A and/with B 把A和B弄混
119. connect v.①连接；②联络
connection n.①连接；②联络
connect A and/with B 把A和B连接
be connected with 和...相连接
120. conscious adj.①意识到的（aware）；②清醒的
unconscious ①无意识的，潜意识的；②失去意识的
be conscious of = be aware of 意识到
121. consider ①考虑；②认为
consider doing 考虑到做某事
consideration n. 考虑
take sth into account/consideration 把...考虑进去
122. considerate adj.体贴的（caring）
It is considerate of you to do sth. 你做...真好
considerable 相当大的
123. consume v.①消费；②消耗；③吃喝
consume alcohol 喝酒
time-consuming 耗时的
124. consumption n.①消费；②消耗
125. contain ①包含；②控制，抑制
contain one’s excitement 抑制住兴奋
126. content n.①内容；②目录；③满意；v. 满意的（satisfied）
to one’s heart content 心满意足
be content with = be satisfied with 对...满意
127. contribute v.①贡献；②有助于；③供稿
contribute to（介） 对...有贡献；有助于
Exercise contributes to better health. 锻炼有助于身体健康
128. contribution n.①贡献；②供稿
make a contribution to（介） 对...做出贡献
129. cool adj.①凉爽的；②冷淡的；③冷静的（calm）；v.使变凉
130. around the corner ①在拐角处；②即将到来
131. correspond v.①通信；②相一致
correspondent 通讯员
correspond to/with 与...相一致
132. cost v.①花费；n.①费用；②成本；③代价
free of cost/charge 免费
reduce cost 减少成本
at all costs 不惜任何代价
at the cost/expense of... 以...为代价
物 cost 人 钱
人 spend 时/钱 （in） doing
人 spend 时/钱 on sth.
人 pay 钱 for sth
It takes sb 时/钱 to do sth
133. count v.①数；②重要（matter）
count down 倒数
count on = rely on = depend on = bank on 依赖；依靠
What counts/matters most is that this activity will invite a professor to deliver a speech.
countless 无数的
134. country ①国家；②乡村
135. couple ①夫妻；②一对
couplet 对联
a couple of 几个
136. course ①课（class）；②过程（process）；③航线
take a course 上课
the course of life 一生历程
of course = You bet. = By all means. 当然
137. court ①法庭；②宫廷；③庭院；④运动场
138. cover v.①覆盖；②走过...路；③占地；④包含（include）；⑤足以支付；⑥报道；n. 书皮
be covered with 被...覆盖
cover an area of 占地面积...
139. coverage ①覆盖；②报道
140. crash ①撞车；②飞机坠毁；③暴跌