有关重症肌无力的临床表现，下列哪项不对
A．晨轻暮重B．休息后缓解C．新斯的明试验阴性D．肌电图示低频重复递减E．可伴胸腺瘤
参考答案：C
--- I’m afraid I can only make a small contribution this time.
--- __________. We really appreciate your assistance.
A．Every little helps
B．The more, the better
C．It’s better to give than to receive
D．The best things come in small packages
用酒精灯加热下列溶液，蒸干后灼烧，所得固体质量最大的是[ ]
A．20 mL 2 mol/L FeCl3溶液
B．40 mL 1 mol/L NaHCO3溶液
C．20 mL 1 mol/L Na2SO3溶液
D．40 mL 2 mol/L NH4HCO3溶液
