It was the second time that we ________ in holding such important parties.
A:succeed
B:had succeeded
C:succeeded
D:have succeeded
某养鸡场拟培育产蛋量高的母鸡品种,你认为最佳的育种方法是( )
台湾海峡的海底有古代森林的遗迹,原因是( )
照样子写词语:
ABCC式,如白雪皑皑:____、____、____