第33题: [单项选择]{{I}}Questions 28 to 30 are based on the passage you have just heard.{{/I}} A. There is no price for the first consultation. B. The price is not mentioned here. C. The price is rather high. D. You can pay whatever you can afford. 参考答案:A 答案解析:[听力原文]
What is the price for going to the clinics for advice
[试题分析]本题考查考生对细节以及词义的理解。
[关键词句]no fe
第35题: [单项选择]正常血液pH保持在 A. 5.35~6.45 B. 6.35~7.45 C. 7.35~7.45 D. 7.35~8.45 E. 8.35~8.45 参考答案:C 答案解析:[解析] 正常人的体液保持着一定的H+浓度或pH,以维持生理和代谢功能。体液的缓冲系统、肺的呼吸和肾的调节作用使血液pH保持在7.35~7.45。所以C答案正确。