2 questions, thank you quickly, questions, answer quickly

I think it's a rhetorical method of borrowing metaphor in a metaphor.

It means the masonry that knocks on the door, and when the door is knocked on, it is discarded. The metaphor is a preliminary tool for defrauding fame and fortune. Idiom source:

Song Zeng Minxing's "Duxing Magazine" Volume 5: "One day, Chong Yuan came and went from the window, and Dongpo asked: 'What is it?'

Chong Yuan said: "Suilai." Dongpo said:

It can be said that it is a great blessing. 'Gai Chong Yuan Dengke also gave sentences. Chong Yuan said:

Knock on the rubble, the public still remembers! ’”

The analogy is to use an object and then discard it.

Simile. The metaphor is a rudimentary means of seeking fame and fortune.

Stepping stones, in your sense, is explained like this: For example, like the ancient people, who studied hard for 10 years for what purpose, was to become an official for the sake of fame, and when they were done to become an official, they went to earn money

Nowadays, people also want to do something, don't they all have a diploma, and even if they don't, you can find someone to make a fake one, and when you make fake documents, don't you need the knowledge in the book?

Even if you find someone good to get it real

Isn't that also the status that the person first exchanged for the science in the book, and the diploma in exchange for the science, is the book, and without the book, there is no officialdom, and the money is the same

As for what kind of techniques were used

That might be a figurative derogatory

The number of female teachers in schools is 3/7 more than the number of male teachers, and the number of male teachers is multiplied by [1+3/7] = the number of female teachers.

In the second question, the number of fifth-grade students is less than 1/8 of the number of sixth-grade students, and the quantitative relationship [number of sixth-grade students] multiplied by [1-1/8] = the number of fifth-grade students.

Number of male teachers (1+3 7) = Number of female teachers.

Number of 6th graders (1-1 8) = 5th graders.

The first blank fills 1+3 7

The second blank fills in the number of sixth graders.

The third blank fills in 1-1 8

Solution: (1) Natural numbers are: 2, 6, 0, 5, 51, 31, negative numbers are: -78, -21

Odd numbers are: 5, 51, -21, 31

Even numbers are: 2, 6, -78

Prime numbers are: 2, 5, 31

The composite numbers are: 6, 51, 21

2. The 1st space: 1490 The 2nd space: 3 20 The 3rd space

million, 20, respectively: 18; 3；a；b

5. The area ratio is 3:5 =9:25

So the area of A is 680 9 (9+25) = 180 (square centimeters) and the area of B is 680 25 (9+25) = 500 (square centimeters 800 = 64000000 (square centimeters) = 640 (square meters 4 = 270 x).

120x=270*4

x = 9 A: Draw 9 cm.