目前,国内外各种育种方法中,最具灵活性的育种方法是杂交育种。
参考答案:对
The result of the study was published last week in New York, a ______ magazine in America.
A.respect
B.respecting
C.being respected
D.respected
下列哪项不是羊膜腔穿刺的并发症
A.胎儿损伤B.可能发生持续性羊水渗漏C.穿刺10天后发生流产D.可能会发生脐带或胎盘血肿E.导致宫内感染