单选题 In my 30 years as (1) , I have tried to help parents understand that (2) discipline teaches a child why certain behavior is wrong and how to correct it. The main principle (3) teaching children (4) behavior is simple. When you see a child behave well, (5) him with praise, a smile, a hug or a pat on the shoulder--something that (6) you think he is a splendid little person.
This does (7) for a child's behavior. (8) for example a four-year old boy, his two-year-old brother and their mother in a department store. The four year-old is not running down the aisles, (9) toys (9) shelves or tearing his brother. What's his reward? His mother (10) him and goes (11) her shopping, grateful for a few minutes of (12) . But (13) his behavior changes. He pushes his brother and starts (14) about. His mother immediately gives him attention (15) him.
A child (16) wants positive attention from his parents, but if the only attention he can get is (17) , he'll, settle for it. It's better than none (18) . Parents (19) pay more attention to their children when they misbehave. That only makes them (20) more, because this is how they can get the attention they long for.

【正确答案】 B
【答案解析】“In my 30 years as a psychologist and educator”意为“在我作为一个心理学家和教育学家的30年中”；此处psychologist和educator指同一个人，故只用一个冠词。
【正确答案】 C
【答案解析】effective意为“有效的”；affective意为“情感的”；efficient意为“有效率的”；invalid意为“无效的；残废的”。
【正确答案】 A
【答案解析】The main principle behind teaching children意为“儿童教育的主要原理”。
【正确答案】 D
【答案解析】desirable意为“所希望的，合意的”；attractive意为“吸引人的”；worthwhile意为“值得的”；sensible意为“明智的”。
【正确答案】 B
【答案解析】reward意为“奖赏”；pay意为“支付”；award意为“授予(奖章、学位等)”；give，pay，award后面都可以接双宾语，没有必要加with。
【正确答案】 C
【答案解析】indicate意为“表明”；represent意为“代表”；symbolize意为“象征”。
【正确答案】 D
【答案解析】do (work，perform) wonders属固定搭配，意为“创造奇迹”。
【正确答案】 A
【答案解析】picture意为“想像”；take…for example意为“以……为例”，本句是一个祈使句。
【正确答案】 B
【答案解析】pull…off意为“把……拽下来”；pull…down意为“把……拉倒。
【正确答案】 C
【答案解析】ignore意为“不理睬”；omit意为“省略，忽略”；blame意为“责备”；abandon意为“放弃；遗弃”。
【正确答案】 B
【答案解析】go ahead with sth. 是词组，意为“继续”。
【正确答案】 C
【答案解析】peace意为“安宁”；calmness意为“镇静，宁静”；silence意为“沉默，寂静”；quietness意为“寂静”。
【正确答案】 D
【答案解析】suppose意为“设想，假想”。
【正确答案】 A
【答案解析】dash意为“疾跑，冲撞”； race意为“赛跑”；jog意为“慢跑”；spurt意为“冲刺”。
【正确答案】 B
【答案解析】by此处表示方式，意为“通过……”；scold意为“责备”。
【正确答案】 D
【答案解析】ordinarily意为“通常”；exactly意为“精确地”；absolutely意为“绝对地”；inevitably意为“不可避免地”。
【正确答案】 D
【答案解析】negative意为“否定的”；passive意为“被动的”；pessimistic意为“悲观的”；irreverent意为“不尊敬的”。
【正确答案】 A
【答案解析】at all意为“根本”，用于加强语气，与否定词连用。
【正确答案】 C
【答案解析】tend to意为“倾向于，易于”；come to意为“达到，总计”；get to意为“到达”。
【正确答案】 A
【答案解析】misbehave意为“举止无礼”；behave意为“举止，表现”；act意为“表演”。