Help with the following questions, hurry!!

Don't enlighten him until he tries to figure it out; Don't enlighten him until he understands it in his heart but can't express it perfectly. If he can't draw inferences, don't give him examples over and over again.

Draw inferences: Draw an analogy from one thing to know many other things. Parables are good at learning and can do this and the other.

1) Zi said: "See the virtuous and think together, and see the unvirtuous and introspect." ”

2) Zi said: "Knowing is knowing, not knowing is not knowing, and knowing is also knowing." ”

3) Zi said: "The deceased is like a husband, reluctant to give up day and night." ”

4) Zi said: "If people don't believe, they don't know what they can do." ”

5) Zi said: "If you are not angry, you are not angry, you are not angry, and if you don't take three corners, you won't be able to do it again." ”

6) Zi said: "His body is upright, and he does not give orders; His body is not right, although he does not obey orders. ”

7) Zigong asked, "Is there a word that can be practiced for life?" The son said, "It's angry! Do unto others as you would have them do to you. ”

8) Zi said: "If you want to do a good job, you must first sharpen your tools." ”

9) Zi said: "Those who know are not as good as those who are good, and those who are good are not as good as those who are happy." ”

1.It is the rule (3) that we should cherish time, the rule (9) that talks about interest is the best teacher, the rule (6) that talks about the way to do things, the rule (7) that talks about teaching skills, and the common rule () that talks about life cultivation.

2.What kind of educational thought does (5) show of Confucius? What is an idiom from this one, explaining what he means.

If you don't think hard, you won't be able to understand things, if you don't check your mistakes, you won't be able to make progress, and if you can't understand one side of things, you won't be able to use them flexibly if you can't think about them from multiple perspectives. ”

Draw inferences.

The pro-is Guo Degang, and the overlord is Li Gang. This is in harmony with the ethics of heaven and earth.

10，5>a>0,4>b>0

11 No other limited strip rolling state pieces? Mausoleum.

When x>0, y>2, when x<0, y<-2

12z max 50 3, large masking minimum is 3 4

The first two equations are represented by double angles, and then the third equation is represented by their difference.

The length of AB is root number 3+1, so the length of AC is root number 3 plus 1, and the corresponding number of C is root number 3 plus root number 3 plus 1 = 2 times root number 3 + 1 Select D