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第1题

14. Much research _______ into the possible causes of the disease in the past few years.　 (A) has been done (B) wa
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第2题

羊水过多是指妊娠的任何时间羊水量超过( ) A. 1000ml B. 1500ml C. 2000ml D. 2500ml
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第3题

控制子痫的首选药物是( ) A. 冬眠1号 B. 硫酸镁 C. 肼屈嗪 D. 20%甘露醇
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第4题

13. Victor took a bus and headed for home, ____ if his wife would have him back.　 (A) not to know (B) not known
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