下列哪种病理类型的肺癌主要表现为伏壁式生长（）
A.鳞癌
B.大细胞癌
C.小细胞癌
D.肺炎型细支气管肺泡细胞癌
E.类癌
参考答案：D
No one except two students _____ the meeting.[ ]
a. has been late for
b. have been late for
c. was late for
d. were later for
(43) 协议是HDLC的许多派生协议的一种。
A．TCP/IP
B．SLIP
C．PPP
D．CSLIP
