第29题: [单项选择](Those of us) who work in chemical (laboratories) should have (their) lungs (checked) quite regularly. A. Those of us B. laboratories C. their D. checked 参考答案:C 答案解析:[解析] 应改为our,代指前面的those of us。
第30题: [单项选择]脾胃虚寒型胃痛的疼痛特点是() A. 胃脘疼痛暴作,畏寒喜暖,温熨胃脘部疼痛可减轻 B. 胃脘胀满,攻撑作痛,脘痛连胁,每因情志因素而痛作 C. 胃脘隐隐灼痛 D. 胃脘灼痛,痛势急迫 E. 胃痛隐隐,喜暖喜按 参考答案:E