题目

信息归纳 阅读下面这篇文章，根据所提供的信息，完成下面表格。 Polly Cooper is a mum of two girls called Debbie and Milly. Here is what she says about them. “Debbie and Milly are so different. Debbie is 15. She is a shy girl. She enjoys doing things by herself, and doesn’t like to talk and play with others. Also, she is so selfish(自私的) than Milly. It’s difficult to ask her to share her things with others. But Debbie has her good points(优点)too. Schoolwork is easier for Debbie, so her exam results(结果) are better. She is also good at dancing and 对燕麦胚芽鞘作如下处理：①放在暗盒里；②在胚芽鞘尖端的下部用锡箔遮住；③在尖端横向插入云母片；④在尖端横向插入琼脂片；⑤切去胚芽鞘的尖端；⑥切去胚芽鞘的尖端，但在切口上放一含有一定浓度的琼脂小块；⑦切去尖端，在切口上放一含有一定浓度的生长素的琼脂小块，并置于暗盒里；⑧切去胚芽鞘尖端，放在暗盒里。上述装置均用相同的单侧光照射。 请仔细分析上图，回答以下问题： （1）有单侧光照时仍能直立生长的有_________。 （2）弯向光源生长的有_________。 （3）不生长、不弯曲的有_________。 （4）如把④放在匀速转盘上，给予右侧光照，它的生长情况是_________。 （5）向光弯曲生长的原因是_________。