诊断MCTD较有意义的抗体
A．ANCAB．高滴度抗RNP抗体C．抗角蛋白抗体D．抗Scl-70抗体E．抗Sm抗体
参考答案：B
We had to wait half an hour _______ we had already booked a table.
A．since
B．although
C．until
D．before
患者，男，30岁，右下腹持续隐痛，轻度阵发性加剧，有轻度发热，恶心，胃纳不香，大便干结，小便微黄，苔白厚腻，脉弦滑，宜选（）
A.芒硝
B.大黄
C.火麻仁
D.商陆
E.石膏
