Provide the questions of the 9th grade pressure part, do not be basic, it is best to exercise the th

That's a lot. I searched slowly, not in a hurry, (*hee-hee......

Yes, give bai you two:

First, 24 points. Du then draws 4 playing cards, adds, subtracts, multiplies, and divides in the shortest time to get 24. Remember that the key answer is time, and our mathematics department often uses it to make a small bet, who will have a meal or something, hehe.

Clause. Second, the Rubik's Cube, the fastest student in our class, can recover a Rubik's Cube in 1 minute, it seems to be 39 seconds, the fastest. You try it too.

I suggest you go to the bookstore and buy some books on mind games: "Games Made by 550 Smart People", "Mind Games Made by 1000 Harvard Students", etc., I have 3 books, which are quite useful.

You can go and see Plato's Republic

This is a very strong thinking ability.

Detective cartoons can be exercised relatively rarely, because your eyes often focus too much attention on the picture after receiving the picture, and reading text can make your brain work and think, so it is recommended to read books.

Logical thinking ability is an indispensable ability for us to study, work, and live. Practicing logical thinking makes it easier for us to become smarter, more confident, and stand out.

Change your way of thinking, make your thinking more organized, comprehensive, strict, accurate, and consciously use a variety of thinking methods, such as reverse thinking, divergent thinking, etc., and make it a habit.

become larger; Becomes smaller; No change (if gravity is taken into account, it becomes smaller).

It is standard when it is at the foot of the mountain, and the water column does not move when the air pressure inside and outside the bottle is equal. When you reach the top of the mountain, the outside atmospheric pressure is smaller than that at the bottom of the mountain, and the air pressure inside the bottle is greater than that outside the bottle, which presses the water column higher (the air inside the bottle expands). The pressure of water on the bottom of the bottle needs to be added to the air pressure value in the bottle, and at this time, the air pressure inside and outside the bottle is small after the change, so the second empty filling is reduced.

The quality of the bottle has not changed, and the third emptiness has not changed.

Usually just do more math, or watch detective movies, I saw a book in the bookstore last time "500 Cases of Logical Thinking Training" is very good, you can read it.

It's a good choice to watch Sherlock Holmes detective episodes, or similar mystery books.

You can play Sudoku, a world-popular logical reasoning game with a history of 100 years, but don't get addicted to it.