HMA
参考答案：
利用HIMEM.SYS即可驱动位于1024～1088K的64KB内存，这一段内存叫高位内存区，简称HMA。
— When did the terrible earthquake in YaNan happen? —It happened ________ the morning of April 20, 2013. [ ]
A. on
B. at
C. in
D. /
买方垄断的无谓损失
