胃癌血行扩散最常见的部位为（）.
A.骨骼
B.肺
C.卵巢
D.皮肤
E.肝脏
参考答案：E
解析：胃癌血行转移最常转移到肝脏。
如图2所示电路，电源电压不变，R是定值电阻．当将一个“2.5V 0.5A”的小灯泡接在a，b两点间时，小灯泡恰好正常发光；若换一个“3.8V 0.5A”的小灯泡接在a，b两点间，则这个小灯泡（ ）
A．比正常发光亮些
B．比正常发光暗些
C．能正常发光
D．灯丝将会被烧断
"Perhaps we need to send for Dr. Smith to see what we can do about it," Father suggested _____
to his neighbor who had come to discuss the problem. [ ]
A. tentatively
B. thoughtlessly
C. definitely
D. rudely
