胞饮泡的形成需要（）的一类蛋白质的辅助。

In (85) software, one question of near-universal interest is how rapidly Windows NT, which began shipping last summer, will be (86) in the marketplace and for what uses. For the most part, observers are (87) about the operating system’s long term prospects, but expect it to remain on (88) rather than desktops during 1994, saying that it won’t become a mainstream product until (89) PCs typically have 16 to 24 MB of RAM, which is unlikely to happen next year.

（89）是（）

A.applications

B.accepted

C.clients

D.enthusiastic

E.servers

F.desktop

G.systems

H.replaced