北约轰炸南斯拉夫联盟共和国是在哪年？
参考答案：
北约轰炸南斯拉夫联盟共和国是在1999年。
— There were five people in the car but they still took me.
— It _____ a comfortable journey. [ ]
A. can't be
B. shouldn't be
C. mustn't have been
D. couldn't have been
下列关于芒硝的现代应用，错误的是（）
A.尿毒症
B.便秘
C.急性乳腺炎
D.肛肠病
E.氮质血症
