All the problems of junior high school, the problems of junior high school students

1.Main subjects: Chinese, Mathematics, English, Science, History, Art, Physical Education, Computer, Labor Technology, **.

2.First. But.. We don't study late here...

3.Entrance exams are generally very simple...

At that time, they kept saying how important the entrance exam was, but in fact, when I got to junior high school, I knew that this exam was not interesting...

Labor ,,, is not manual ,,, labor skills.

1.Pre-Geography **Fine Arts Labor and Crafts. In the upper year, there is also Political Physics and Biochemistry 2There will be from the second to the third year of junior high school.

3.The test is required from the beginning to the third year of junior high school.

One word tired.

1. Chinese, Mathematics, English, Science, History, Thinking, Physical Education, Labor ** Art ......

2. The first day of junior high school. 3. A lot of any questions.

1.Major subjects: Chinese, Mathematics, English, Physics, Chemistry, Politics, History, Geography, Biology.

Others: **, Physical Education, Fine Arts, Comprehensive Practical Activities.

2.We are in the third year of junior high school (different regions).

3.The entrance exam is not too difficult, and no one knows the questions, which is similar to usual.

In addition to the number of languages, politics, history, geography, physics, chemistry.

Grades 7 and 8.

5th and 6th grade questions.

1-3 Language, Mathematics, Foreign Affairs, History, Physical Education, ** Fine Arts, 1-2 Information, English Reading, Reading, Geography, 1. Labor.

The questions for the junior high school entrance exam are very simple.

1 Chinese, Algebra, Geometry, History, Geography, Politics, Physics, **, Physical Education, Biology in the second year of junior high school, and Chemistry in the third year of junior high school.

2. Visiting school generally starts from the first year of junior high school.

3. You simulate those.

1。Strong emotions of the student.

As a teacher, whether you are qualified or unqualified or not worth mentioning, noble character, noble or still want students to learn this subject, at least I hope that my teaching can achieve good results. But the common problem is that students are extremely tired of school. Especially after the implementation of compulsory education, the number of such students has skyrocketed, how many students are in each class, and as the grade grows, sleeping, talking, watching, and sitting in class, which seriously disrupts the normal teaching order and helplessness, not to mention what results are achieved.

2. Poor willpower and willpower.

Learning is a hard one to understand. Although many students have good intelligence and superior conditions, due to poor will to learn, at most three minutes, can not persevere, other things are slightly distracted, happy, fearful, fearful, it is difficult to achieve good grades, and some even become backward students.

Three. Strong rebellious mentality.

Students in the stage of psychological maturity, at this stage, students feel that they have grown up and no longer do everything that parents or teachers want, and there is a strong rebellious mentality. This kind of psychology is very easy to cause conflicts between students and teachers, and it can even be said to be the source of conflicts between teachers and students. Impulsive students with teachers, easily and school, against their parents, studying, not eating and even committing suicide cause irreparable tragedy.

Addicted to virtual worlds4.

The harm of middle school cattle addicted to the Internet has attracted attention, and some measures have been taken, but objectively, there is little effect, and it has always been a major headache for teachers. The impact of the Internet on students, in addition to affecting attention, physical and mental health, is more importantly, reflected in the formation of morality. On the one hand, it takes a lot of time to make students have a similar network phenomenon, and on the other hand, it requires a lot of money, and the breakfast money is lost in many students, parents pay fees or use data to eat, and even theft, robbery, etc.

The emergence of these two situations is extremely unfavorable to the shaping of the moral character of Chengdu students. In addition, students are addicted to the Internet and are often silent in interpersonal communication, communication skills, and heart defects.

The absolute value cannot be negative, but |x-7|with |y+2|are opposite numbers to each other (their absolute value can only be equal to 0), so we know that x=7, y=

If 15 kg of brine contains x kg of salt, then the mixed salt is kg, and the concentration is (. ( and ( derive x= and x=3

At this time, the concentration of 15 kg of brine is 3 15 = 20%.

Therefore, the concentration of brine should be selected in the range of 10%-20%.

There is 5% salt water in 10 kg of solute is 10 times 5% = .

Let the solute in 15 kg be x

After solving x= by dividing by 15=10%.

The second formula is:

Solution: 3 divided by 15 = 20%.

So the concentration is 10-20%.

(x-4) is non-negative, and x+y-z is non-negative.

Adds up to 0It is obtained, x=4 y-z=-4

5x+3(y-z)=20-12=8

Primary square 8 square 4

Cubic 2 to the fourth power 6

To the fifth power 84 is a cycle. 2010 divided by 4 is 2... So the end is 4

The two left terms in the equation are a square term and an absolute term respectively, and if the equation is true and equal to 0, then both of these terms must be equal to 0, then.

x=4z-y=x=4

then 5x+3(y-z)=20-12=8

The primary square of 8 is 8

The last digit of the quadratic yes is 4

The last digit of the cubic yes is 2

The last digit to the fourth power is 6

The last digit to the fifth power is 8 again

After that, there are 4 cycles according to this rule, then.

The last digit of the 2010th power is (2010-1) 4, and if the remainder is 1, then the last digit is 4

Because (x-4)2,?x+y-z is greater than or equal to 0, so the addition of two terms to 0 means that both are 0

So x=4 y-z=-4

5x+3y-3z=8

8 2 = last bit 4, 8 3 = last bit 2, 8 4 last bit 6, 8 5 last bit 8, so 2010 4 = 502 remainder 2, so the last bit is 4

From the meaning of the title x-4=0, x+y-z=0

So x=4 y-z=-4

Substituting 5x+3y-3z gets -8

And because the last digit of 2010 is 0

So the last digit of (5x+3y-3z) 2010 is 0

1) 90°+3, reason: 1+2=180°, 2+3=90°. Subtract the two formulas.

2）-5.Reason: Since the exponent is an odd number, each term becomes the opposite of the original number.