苏联心理学家阿格法诺夫做的“拾柴火”实验是( )
A．观察法实验
B．自然实验
C．实验室实验
D．自然实验与实验室相结合实验
参考答案：B
The witnesses ______ by the police just now gave very different descriptions of the fight.
A．being questioned
B．questioned
C．to be questioned
D．having questioned
某孕妇宫内妊娠32周，血压增高1周，头晕眼花2天入院。入院查血压160/110mmHg，尿蛋白1．5g/L，24小时尿量为1500ml。其诊断为
A．不完全流产B．稽留流产C．难免流产D．先兆流产E．完全流产
