阅读理解。

Dear Jim,

     How is it going?

     It's winter in Toronto. It's snowing and cold. People are wearing coats, scarves and gloves. But we are all

having a good time. Some kids are making a snowman (堆雪人).Some are throwing snowballs (扔雪球). My

brothers are skiing (滑雪). My mother is cooking for US. She is cooking hot food. It's very delicious.

     I hope you can come and visit us.

                                                                                                                                Love,

                                                                                                                                John

1. Who writes the letter?

    ___________________________________________

2. What's the weather like in Toronto?

    ___________________________________________

3. Are the kids playing basketball?

     __________________________________________

4. What's John's mother doing?

   ____________________________________________

5. What are people wearing?

    ___________________________________________

张××，男性，36岁，已婚，因“畏寒、发热20天”，于2000年8月10日入院。患者20天前因“感冒”后开始出现畏寒、发热，但无寒战，发热不规则，每日体温波动在37～39℃，偶有少量出汗，伴有右下胸胀痛。曾用青霉素加氨苄青霉素治疗，效果欠佳。发病后食欲不振，日益消瘦，大便稀，1～2次/日，小便正常。以往体健，否认胃病、肝炎、肺结核病史。查体：体温38.5℃,脉搏92次/分,呼吸24次/分,血压105/70 mmHg,发育正常,营养欠佳, 消瘦，重病容； 皮肤无皮疹；巩膜无黄染，五官无异常；颈软；胸部对称，右肋间隙无水肿及压痛，肺呼吸音清晰；心界正常，心音规则，无杂音；腹平软，肝右肋下3 cm，剑突下5 cm，质地中等，有明显压痛及叩击痛，脾未及，移动性浊音阴性；四肢脊柱无异常。实验室检查：血常规：Hb 130 g/L，WBC 17.3×10⁹/L,N 0.70,L 0.14,噬酸性粒细胞0.16。尿常规正常。大便常规：黄稀，镜检：白细胞0～2/HP。胸部透视：心肺正常，膈肌升高，运动受限。肝功能检查：正常。问题：

本病的治疗原则是什么？