当肿瘤处于迅速发展阶段，肿瘤广泛浸润时，手术前应考虑先行术前放射或化学药物治疗。
参考答案：对
With the weather getting colder, visitors from Australia spent their ___ days in Beijing.
A．a few last
B．last few
C．few last
D．last a few
