Please let me know the details of the test, thank you

Isn't that a 6th grade question?

1.Solution: The sports field is drawn on this drawing is x centimeters.

150:30=90:x

150x=30*90

x=2.(formula omitted).

Circumference 1*500=500 (cm) 2*cm) = m) area.

Solution: The drawing on this drawing is x centimeters.

30 150 = x 90 x = 18 The drawing on this sheet is 18 centimeters.

Let the perimeter drawn on this drawing be y centimeters, the area drawn on this drawing is z centimeters, the actual perimeter is c meters, and the actual area is s meters.

y = 2 π r = 2 x x 1 ≈z = π r ² = x 1² ≈

30 150 = y c is substituted to get c =

30 150 = z s substitution to s =

The actual perimeter is meters, and the actual area is meters.

Don't believe in some famous teachers' experience lectures or the introduction of the champion (I have accepted a similar interview after the college entrance examination), in my opinion, follow the pace of the teacher (time permits, slightly ahead) + do the question on the line (the question must not be plausible, to form a conditioned reflex to the topic, such as mathematics, you have to do the problem to achieve this state - after getting a set of questions, the solution methods and steps will be immediately generated when you look at the question, most of the choice fill-in-the-blank questions are basically not drafted, Of course, the last question sometimes takes a little time to think, but I can basically do one set in an hour anyway).

Pay attention to rest, you must go to bed before 12 o'clock; It's best not to fall in love early (I even think that high school students falling in love are not called early love at all, after all, at that age, but for most middle school students, love will have a bad impact on their study and life, if they are the kind of students who pursue better grades, if they just want to end after 3 years, love is a very good spice); Don't have antagonism with the teacher, even if you feel that the teacher treats you badly or doesn't pay enough attention to you, you can discuss with your classmates if you have problems in the first and second years of high school, and it is best to ask the teacher if you have questions in the third year of high school, because the third year of high school is very stressful; Play games in moderation, and if you feel that you can't study, it's best not to play.

Most importantly, I believe that learning means dedicating oneself to learning, and the time in the classroom must be maximized. When you feel stressed or tired of studying, you have to find your own way to relax, I prefer ball games, middle and long-distance running, in addition to physical fitness, I am the champion of the school, listen to **, and chat with friends and parents is also very good.

Generally speaking, don't go to any holiday cram school, it's a waste of time, I have never participated, the time to participate in cram school can be used to do what you are interested in (this interest can be related to learning or not, I have classmates who will do all kinds of math problems as their biggest hobby) but do not have time to do things before the holiday, after all, learning is not the whole of life, the rest of the time is of course to help parents do what they can. If you have to attend cram school, it is better to do it yourself, so the effect is better, because now all kinds of teaching aids are flying all over the sky, and you don't have to worry about running out of information.

In the end, you have seen so much, maybe it still doesn't help you at all, because everyone has their own learning method, but there is one point, there is a reward for paying, and there is a greater gain for greater pay. In addition, don't think that it will be easy to graduate from high school and get admitted to a good university, I am now at Peking University, and the time is still very tight, of course, the degree of bad is much better than that of high school.

Good luck!

Ctrl+Enter is a shortcut key for the path to a selection, and the selection is created without filling the color, which is only one possibility, that is, the layer where the selection is made is hidden, or the layer where your selection is located is not hidden, and the green is also filled, but there is a layer on top of this layer that is occluded. There is no other reason. Keep in mind that the selection must act on a layer, but it doesn't depend on any one layer.

Try it again, it's the right way.

1 There is no problem with the layer.

2 The input method is not turned off, and the input method shortcut key is not easy to use.

You try it first, and if it doesn't work that way, you'll see it later. -

1.Is there a problem with the constituency? For example, if there are any extra constituencies elsewhere.

2。Is the input method not open to English?

3。Did you choose the wrong layer?

4。I sometimes have problems.,I use cs2.,Yesterday's rectangular selection was directly increased selection.,If the above is correct.,Then you can reinstall PS.。 Maybe the PS is damaged.

No problem in operation!!

Are you making a layer mistake yet!!

There are two types of layers, one is a text layer, and if it's a text layer, the fill color is invalid!!

The other is an ordinary layer!! It's possible to fill in layers!

If these are all right, then it may be a problem with the software Suggestion, reinstall PS and try it!!