I am anxious to ask for the final self test questions of the first semester of junior high school, a

Let a=x

Because ae=de so ade=x

And because de=be so abe=x 2

Because ab=ac, be=be, c are common angles, ebc=x

Join, get a+ abe+ ebc+ c=180, i.e., x+x 2+90-x 2+x=180

x=45

Solution: A has x people, B has y people.

x+y=101

4（1/3x+1/2y）=345

Solution: x = A: There are 61 people in class A and 50 people in class B.

Let the X and Y people in class A and B each be a system of binary linear equations.

x+y=101--the number of people in class A + the number of people in class B = the total number of people 4 * (1 3) x + 3 * (2 3) x + 4 * (1 2) y + 3 * (1 2) y = 345 - the number of plantings in class A + the number of plantings in class B = the total number of plantings.

To solve the equation, we get y=50, x=61, then there are 61 people in class A. Class B 50 people.

Assuming that everyone planted 3 trees, the total number is 303. Now some of them have one tree per person, and the result is 345 trees, which means that 345-303 = 42 students have planted 4 trees. That is to say, students from Class A 1 3 + students from Class B 1 2 = 42 students.

The total number of students is 101, (students in class 1 3 + students in class B 1 2) * 2 = (students in class 2 3 in class A + students in class B) = 84

101-84 = total number of students in two classes -= (students in class 2 3 + students in class B) = 1 3 students in class A = 17

Class A = 17 * 3 = 51

Class B = 101-51 = 50

After submitting the answer, I saw that someone used the equation to solve it for you, and I realized that this is the first year of junior high school, and you have already learned the equation, so it will be easy to do.

Final Examination Questions (Paper B) for the first year of secondary school

B-volume capability migration.

1. Fill in the blanks: (8 points).

1 I don't know who cut out the thin leaves.

2 A dragonfly has risen to its head.

3 The sun rises in the east and rains in the west.

4 The green hills cannot cover it.

2. Multiple choice questions: (6 marks).

5 "On the shore of Daming Lake, by Baotu Spring, the former residence is concentrated in the depths of the weeping poplar. ”

It is written: a Su Shi b Xin Qiji c Li Qingzhao d Lu You.

6 "Thousands of words of poetry and history, a hoof's bones in autumn, three or five miles of grass hall, and the ambition of gulls in spring. ”

It is written: a Li Bai b Wang Wei c Du Fu d Bai Juyi.

7 The ghost fox has a character, and laughs and scolds into articles.

It is written: a Mencius b Peng Ruishu c Pu Songling d Ganbao.

3. Write a few sentences modeled on the rhetorical device of the following sentences: (3 marks).

8 example sentences: Spring is like a doll that has just fallen to the ground, it is new from head to toe, and it grows.

Spring is like a little girl, with flowers and branches, smiling, walking.

Spring, like a sturdy young man, with iron arms and legs, leads us forward.

The Song people had cultivators, there were plants in the fields, and rabbits touched the plants, (a) broke their necks and died. (b) Cause of interpretation (l