*8.confused adj.困惑的，不解的→confusing adj.令人困惑的→confuse vt.使困惑，把......弄糊涂；混淆→confusion n．困惑，糊涂；混淆

　　　9.limit n．限制；极限；界限vt.限制→limited adj.有限的

　　　10.balance vt.& vi. & n．平衡；抵消→balanced adj.平衡的

　　用上面加*号的单词的适当形式填空

　　1．While the experts agree that this kind of food is harmless,_it will be harmful to the teenagers if they eat it too much frequently.

　　2．The confusing problem really confuses the confused boy, who is always confused about such things.

　　3．David defended his idea that each of us should refuse to buy foreign products in defence of our national industry.

　　4．I will not tolerate that sort of behavior in my class and, what's more, no one will be tolerant of that.

　　5．The child behaved so well in class that the teacher praised his good behavior in front of others.

　　6．He argued against smoking, and insisted that it was beyond argument that smoking was harmful to health.

　　[话题单词积累]

　　1．adolescent /ædə'les(ə)nt/ n．　青少年

　　adj. 青春期的

　　2．anxiety /æŋ'zaɪətɪ/n. 担忧，焦虑

　　3．sadness /'sædnəs/ n. 悲哀，忧伤

　　4．problem /'prɒbləm/ n. 问题

　　5．depression /dɪ'preʃ(ə)n/ n. 压抑，沮丧

　　6．alarmed/ə'laːmd/ adj.担心的，害怕的

　　7．scold /skəʊld/ vt. 责骂，斥责

　　8．ashamed/ə'ʃeɪmd/ adj.惭愧的；害臊的

　　9．blame /bleɪm/ vt. 责备

　　10．amaze/ə'meɪz/ vt. 惊奇，惊叹

　　11．astonish /ə'stɒnɪʃ/ vt. 使惊讶

　　12．complain /kəm'pleɪn/ vi. 抱怨，发牢骚

　　13．bored /bɔːd/ adj.厌倦的，烦闷的

　　14．blue /bluː/ adj. 忧郁的

15．pressure/'preʃə(r)/ n. 压力