For each blank, choose the best answer from the four choices and write down on the answer sheet.
(11) is a protocol that a host uses to inform a router when it joins Or leaves an Internet multicast group.
(12) is an error detection code that most data communication networks use.
(13) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.
(14) is a transfer mode in which all types of information are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media.
(15) is an identifier of a web page.

A．OSPF

B．RIP

C．RARP

D．BGP

藿香、佩兰的共同功效是（）

A.化湿，解暑

B.燥湿，解表

C.行气，解表

D.燥湿，止呕

E.化湿行气，温中