The heat generated by the operating system war between rivals IBM Corp. and Microsoft Corp. is (21) .
Windows 95 and OS/2 introduce a new (22) . Both systems claim to multitask legacy DOS and 16-bit Windows applications. However, only OS/2 can provide full memory (crash) protection for these legacy applications because it is capable of running each DOS and Windows application within its full-protected memory address space.
Windows 95 will run all current Windows applications in the same shared- memory address space, affording full memory protection only to the (23) 32-bit Windows 95 applications. In other word, Windows 95 users will have to (24) their current Windows applications to Windows 95 version to match the memory protection OS/2 now delivers.
While OS/2 does afford superior memory protection and multitasking for legacy DOS and Windows applications, it will not be able to run any Windows 95 applications. IBM may address this (25) in an update of the OS but has no present plans to do so.
A．mistake
B．advantage
C．benefit
D．shortcoming
舌隆突处有内陷窝，腐质较软，探窄深。叩诊（+），松动Ⅰ°。牙龈充血，根尖区牙龈有一小脓包，刺破有脓液溢出。X线显示
龋洞深，探诊无反应，不松动，叩痛（一）。
大面积龋坏，髓腔暴露，叩诊（+），松动Ⅰ°。牙颈部有瘘管，牙龈充血。X线显示
根分歧及近中根处有低密度影，根周骨硬板消失。
牙根形成1／3，牙囊不连续，上方骨板破坏。
进行诊断的重要依据是（）