GNU的含义是()。
A.GNU是UNIX
B.GNU不是UNIX
C.UNIX工程
D.GNU工程
参考答案:B
—Why didn't you come to Mike’s birthday party yesterday?
---Well, I ____, but I forgot it.
A.should
B.must
C.should have
D.must have
洋地黄慢性中毒最早出现的症状是
A.窦性心动过缓B.消化道功能障碍C.定向力丧失D.心脏传导阻滞E.色视障碍