新生儿受其母体麻醉性镇痛药影响致呼吸抑制时，可用下列哪种药物拮抗（）
A.丁丙诺啡
B.氯胺酮
C.纳洛酮
D.硫喷妥钠
E.喷他佐辛
参考答案：C
He felt lonely in the first month abroad, but after some time he got ______ alone and even enjoyed ______ there. [ ]
A. used to living; to study
B. used to five; studying
C. used to living; studying
D. used to live; to study
表达式1+3\2＞1 Or 6 Mod 4＜3 And Not 1的运算结果是( )。
A．-1
B．0
C．1
D．其他
