题目: I'm ______ the blackboard, but I can't ______ any words.[ ]A. looking, see B. looking at, see C. seeing, look D. seeing, look at 答案: 答案:B
题型:单项选择题 妊娠合并再障对胎儿的影响哪项应除外:A.当血红蛋白≤60g/L时可以导致流产B.当孕妇重度贫血时可出现胎儿发育迟缓C.当孕妇重度贫血时可发生早产D.当孕妇重度贫血时可发生死胎、死产E.当孕妇重度贫血时可发生胎儿畸形 查看答案