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【单选题】
如果X为负数，由X的补码求-X的补码是将A.
X的补码的各值保持不变
B.
X的补码的符号位变反，其它各位不变
C.
X的补码除符号位外，各位变反，末位加一
D.
X的补码连同符号位一起变反，末位加一
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反馈参考答案：
举一反三
【单选题】张某为医院新扩建的老年病区护士长,为保持病室安静应考虑
A.
工作人员在进行操作时应做到 "四轻"
B.
白天病区环境噪音标准在 35-50dB
C.
两人交谈的最佳距离是 3米
D.
病室安装隔音罩
【单选题】As he works in a remote area, he visits his parents only _________.
A.
occasionally
B.
anxiously
C.
practically
D.
urgently
【简答题】病 区应保持安静 ,护士应做 到 “四 轻 即 、 、 、 和 。
【单选题】Mary still visits her former boyfriend. They split up long ago and there were no _______ feelings.
A.
catchy
B.
clever-dick
C.
pathetic
D.
hard
【单选题】As he works in a remote area, he visits his parents only _______ .
A.
anxiously
B.
occasionally
C.
urgently
D.
hopefully
【单选题】Because he works in a remote area, he visits his parents only ______.
A.
occasionally
B.
partly
C.
practically
D.
once
【简答题】He is sy-five, he still (but, however) pays regular (journeys, trips, visits) to his old mother.
【简答题】A. He was very angry. B. He is still learning to drive. C. He is helping Mary obtain a driver’s license. D. He has a driver’s license.
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