1. puzzle ['pʌz(ə)l] 
v. 迷惑，使困惑; n. 谜，难题
The findings of the survey puzzle me. 我对调查结果感到困惑。

2. confuse [kən'fjuːz] 
v. 使困惑，使糊涂，使更难于理解
Stop confusing the issue! 不要使问题更加复杂化！

3.mislead [mɪs'liːd] 
vt. 误导，带错
The guide misled the tourists in the woods. 向导在森林里给旅游者带错了路。
The media often mislead the readers. 媒体经常误导读者。

4.refuse [rɪ'fjuːz] 
v. 拒绝，回绝 refusal n. 
The patient has the right to refuse treatment. 病人有权拒绝治疗。

5.infuse [ɪn'fjuːz] 
v. 灌输
They infuse the young people with Patriotism. 他们向年轻人灌输爱国主义精神。

6.diffuse [dɪ'fjuːz] 
adj. 弥漫的，冗长的 v. 弥漫，传播，散布
Television is a powerful means of diffusing knowledge. 电视是一个传播知识的强大工具。

7.transfuse [træns'fjuːz] 
v. 输液，渗透，灌输
blood transfusions 输血

8.perplex [pə'pleks] 
vt. 使迷惑，使混乱，使复杂化
His strange behavior perplexed her greatly. 他的奇怪举止使她茫然不解。

9. complex ['kɒmpleks] 
adj. 复杂的，复合的 n. 建筑群
a complex system of voting.一套复杂的选举体制。

10. intricate ['ɪntrɪkət] 
adj. 错综复杂的
The watch mechanism is extremely intricate and very difficult to repair. 这块手表的机械装置极其复杂，要想修复非常困难。

11. complicate ['kɒmplɪkeɪt] 
vt. 使复杂化，使混乱
Don’t perplex the issue; It isn’t so complicated. 不要使问题复杂化了，它没那么复杂。

12. sophisticated [sə'fɪstɪkeɪtɪd] 
adj. 复杂的，精致的，富有经验的
I don't think I have any books that would suit your sophisticated tastes. 我觉得我没有任何一本书与你高雅的品味相配。