“今之孝者，是谓能养，至于犬马，皆能有养，不敬，何以别乎？”《论语》中的这句话告诉我们（　　）

①孝亲敬长是为人的基本要求与道德规范

②孝敬父母，最重要的是敬重和爱戴父母

③孝敬父母的最高要求是保证父母的基本物质生活

④孝敬父母应该在精神上给予父母更多的慰藉

爬的笔画顺序是____。

    People like dolphins because they are both lovely and clever. They have an 1 IQ (智商).

Dolphins can 'talk'. Scientists try to ‘talk' with dolphins, and the results make them 2. They find that dolphins 3 understand them so well.

4 animals enjoy playing, but dolphins like to make their games different. On a beautiful day in 1997, scientists on a beach 5 a little dog going into the sea. They were surprised to see the dolphins come up to the dog and then start throwing(扔) it into the air. The dog 6 the 'game' and kept playing with the dolphins for over an hour.

    Dolphins live in a very different world from 7, but they are very good at our 'IQ tests(测试)'. For example, in the picture above, a dolphin jumps 8 the water when he hears a whistle noise(哨声). He does this because he will get a fish 9 an award.

    There is 10 much to learn about these lovely friends.