肺转移性肝癌指的是
A．他处的癌转移到肺和肝B．肝癌转移到肺C．肝癌和肺癌同时转移到他处D．肝癌和肺癌互相转移
参考答案：B
After two years' research，we now have a ________ better understanding of the disease.(2013·全国Ⅱ)
A．very
B．far
C．fairly
D．quite
