最新的研究表明，肺癌不仅和尼古丁有关，还与（）有关
A、人的神经
B、酒精
C、年龄
D、煤焦油
参考答案：A
Do you know().
A．who writing is she to
B．who he is writing to
C．she is writing to whom
D．who is she writing to
巨块型肝癌是指癌结节直径大于（）
A.5cm
B.8cm
C.10cm
D.12cm
E.15cm
