Can plants learn and remember? Monica from Australia thinks so.

    Monica and her team members did some tests on mimosas(含羞草). The plants close their leaves quickly when people touch them. They put some mimosas in 56 pots. Every time they dropped the pots from 30cm high, the plants closed their leaves. Monica and her team members did this for a whole day. To their surprise，at the end of the day, the plants didn't close their leaves at all. It seemed that the plants learned that this action wouldn't hurt them.

    Another amazing thing was that the plants might remember things for a long time. Monica dropped the same pots of mimosas four weeks later. The plants still didn't close their leaves.

    Monica wasn't sure how plants learned and remembered. "The plants don't have brains, after all. Maybe they learn and remember with the help of their cells(细胞)," she said.

①这是一条经典的旅游路线，既能让你饱览大自然巧夺天工般的美景，又能让你领略多姿多彩的异域风情。

②近年来农民收入稳步增长，生活条件大大改善，对商场里琳琅满目的高档电器也不再望尘莫及了。

③他在学习上坚持博学审问，对待工作更是兢兢业业，经过长时间的努力，终于取得了突出的成就。

④由于过于相信自己的能力和判断，不肯认真研究调查，他对于群众的意见总是充耳不闻，所以常常受到大家的批评。

⑤有的同学过去对语文学习不重视，到了高中才发现既要补欠账，又要学新知识，被弄得左支右绌，狼狈得很。

⑥央视《中国诗词大会》这个温文尔雅的节目走红，引起社会广泛关注，节目中一举夺冠的小姑娘更是成为谈论的焦点。

明善恶，辨是非是做人的基本品质。青少年要在复杂的社会生活中做出正确选择，应做到（   ）
①学会理性分析   ②树立美好理想     ③树立正确的良知标尺   ④选择好榜样