将生长状况相同的完整胚芽鞘均分成①②③三组,处理方式如图所示。三组均在适宜条件下水平放置,—段时间后观察弯曲情况。实验结果为①③组背地弯曲生长,②组水平生长。下列有关说法错误的是A. 该实验能证明生长素的横向运输发生在胚芽鞘尖端B. ②组云母片阻止了生长素的极性运输C. ①③组胚芽鞘背地弯曲生长不能体现生长素的两重性D. ①组属于对照组,②③组均属于实验组
At the conference, people of different ________ were given a chance to exchange theirs with each other.
[ ]
A.
points
B.
manners
C.
views
D.
ways