Spend 295 to do a test value.,Hurry.。。。

Actually, to be honest, I don't think it's necessary. It's not your first day of exposure to liberal arts and sciences, and you should have an idea of your current situation. It's not that you have to choose which subject you are good in now, but it depends on your interests and your confidence.

After graduating from college, you will really appreciate how uncomfortable it is to do a job that you don't like to do. Since you've always had your own beliefs, you can learn what you want to know in a variety of ways. What profession**, personality analysis, sometimes even misleads you!

The most important thing should be to get to know yourself first!

Do what you like, what you are good at, psychology between sociology, physiology, philosophy and other disciplines, have you ever seen a specific social discipline or philosophy is calculated, I can tell you accurately that the evaluation is a fraud. Psychological counseling is very expensive, but it is by no means this kind of person who does not ask about the specific situation of the individual, and asks for money by relying on a test, and the institutions and individuals who do this evaluation are the scum in the psychological counseling group, don't believe it.

If you are really confused, I can talk to you, rest assured, I will not charge a penny.

Because you say you don't know what you really like, so I think you need some correct advice and guidance, you think **high, I'm afraid it's not worth it, but if you don't go to the test, you may regret it in the future, why didn't you go in the first place. Go for it, even if it's not worth it, when buy a lesson. Of course, you can also slowly form your own outlook and direction in your future life.

The second year of high school was divided into classes, right? I'm afraid that time will not wait for anyone. Make early decisions.

Flowers do not burn because there is too much moisture, which is about 70-80% of the total mass

Therefore, the flowers can be soaked in absolute ethanol first, and they can be burned after about a day.

According to the ecotype, it can be divided into: (1) woody native cover plants. 2) Grass native cover.

3) Ferns can be divided into the following according to the scope of application: (1) open ground cover; (2) rocky ground cover; (3) sloping ground cover; (4) Forest edge and understory ground cover.

The difference between people and flowers is too great to be recommended.

You can choose a guinea pig and just cut off the hair, and a lot of experiments are better done with him.

Like the flower and bird market, there are some for sale.

Amount. You can go buy a little ph paper.

Or use neutralization titration.

Wouldn't you be asked to design a scientific experiment to count the number of times a rat woman appears in bright and dark soil?

First of all, it is necessary to understand the living environment of the rat woman and collect it.

Rat women prefer dark, damp environments, and generally inhabit under rotten trees, rotten leaves, stones, etc., and sometimes appear in houses (thatched houses) and courtyards. It is normal for rat women to live between 20---25 degrees. If the indoor and outdoor temperature is about 25 degrees, it can be found in the stones, bricks, corners, under the rubble, in the basin, and in the altar in front of and behind the house; If the temperature is below 25 degrees Celsius, you need to choose a warm flower cellar, next to the sewer in the courtyard, or under the kitchen floor tiles in bungalow conditions.

When we collected in the school garden, we found that the number of rat women was smaller, and the individuals were smaller, with some small individuals being the mainstay. It can be collected under the bottom of pots, but the number is small, if the pot is placed on the concrete floor, the number will be very small, and the amount of excessive water will be greatly reduced. For the convenience of collection, we found after some efforts that if the Taiwanese grass is shoveled up and covered on the lawn next to the wall (can be covered with two to three layers), do not water for a few days, and after the grass is dry, water a small amount of water for about three days, as long as it is relatively wet.

If you start collecting in about a month, you can get a larger number of rat women. Moreover, the harvesting process is very convenient, as long as the turf is removed. During the collection of rat women, it must be carefully protected, and after collection, the container should be filled with some wet soil and pay attention to ventilation.

Wet soil is best rich in organic matter, the color is best black, at the same time you can put a few rotten leaves or some small roots of plants, you can also dig a pit in the ground in a dark corner when collecting, put in a plastic cup, the mouth of the cup is flush with the ground, put a little fruit in the cup, and a large number of rat women can be lured overnight.

Rat Woman ** process.

1. Raise the question: When light will affect the life mechanism of the rat woman, it is the control, and see how the light affects the rat woman's life through the control.

2. Make an assumption: The rat woman is suitable for living in a dark environment, and light will affect the life of the rat woman.

3. Make a plan:

1. Principle: Rat women are randomly distributed in the same environment such as humidity and low temperature, and are in the dark while there is light, and the light side is dark 2. Materials and utensils: 10 rat women in each group. Wet soil. Books or cartons.

3. Experimental procedure: Put the rat woman into one end of the carton, and have light and no light on one side, (or put all 10 rat women in the ** of the device) and let stand for 2 minutes. The number of rat women in bright and dark places is counted once at a time, three times.

Fourth, the implementation plan: according to the above experimental plan to do experiments. During the experiment, it is necessary to observe carefully and record carefully. It is recorded in the table below

Environment times. One. Two.

Three. Average value.

There is light. 7 pcs.

6 pcs. 8 pcs.

There is no light. 3 pcs.

4 pcs. 2 pcs.

Five: Conclude that light affects the life of the rat woman.

6. Expression and Communication: The Rat Woman is suitable for living in a dark environment, and light will affect the life of the Rat Woman.

What did you write?,The title is not clearly written.,How...

This experiment number is: Identification certificate of jadeite (A goods) flowers.

The total mass shape is carved by the flowers.

The color is light green.

Density-polarized heterogeneous aggregates.

refractive index spot measurement).

Absorption spectra of jadeite characteristic spectrum.

Magnify to examine the interwoven structure of the fibrous columns.

Natural jadeite a goods bamboo.

Very small.

Visually inspected as fine glutinous species.

In the absence of cracks.

**Around 1-2000.

I hope you have to buy expensive.

I also hope to see a clear picture of natural light, thank you.