词法分析器用于识别（）
A.字符串
B.语句
C.单词
D.标识符
参考答案：C
–-I never thought she would _______ my invitation to the concert.
—She would feel sorry for missing the concert someday.
A．refuse
B．suppose
C．return
D．Remind
丙酸倍氯米松
A．β2肾上腺素受体激动B．M胆碱受体拮抗剂C．白三烯受体拮抗剂D．糖皮质激素药E．磷酸二酯酶抑制剂
