慢性再障的治疗首选
A．丙酸睾丸酮肌肉注射
B．造血干细胞移植
C．维生素B12肌注
D．注射抗胸腺球蛋白
E．肾上腺糖皮质激素口服
参考答案：A
—That's a big box. Is it heavy? Please let me ____ you.
—No, thanks. It's big, but it's not heavy. [ ]
A. helping
B. to help
C. helps
D. help
如果经济中由于价格的变化使人们拒绝接受货币，则存在温和的通货膨胀
