小细胞肺癌最常见的转移途径是()
A.直接蔓延
B.血行播散
C.淋巴转移
D.支气管播散
E.以上都不是
参考答案:C
The activities organized by our school really gave us a platform ________ we learned team spirit.[ ]
A. that
B. where
C. which
D. when
生产力的发展、私有制的产生,是警察产生的经济条件。( )