慢性肾盂肾炎尿毒症患者，宜选用下列哪种药物（）
A.卡哪霉素
B.呋喃类药物
C.新霉素
D.先锋必（cefobio1）
E.青霉素
参考答案：B
--- Have you considered _____ your job as a teacher?
--- Yes. I like the job because a teacher is often considered _____ a gardener.
A．to change; to be
B．to change; being
C．changing; being
D．changing; to be
