What is the answer to the review and expansion of the Classroom Workbook for the sixth grade of primary school Chinese published by People's Education Press? urgent

First, it is common to analyze the tenacious erosion of the birth of the donation field and the milestone of weak retreat counterclockwise.

Cross out: first, second, second, first, second, second, first, first, second, first.

Third, the reputation of silence is immortal, painful and determined to give up.

Fourth, face up to difficulties, brainstorm, Qi Xin work together, be shameless, draw inferences from others, express their opinions, be brave in innovation and seek truth from facts.

Dedicated to science, indifferent to fame and fortune, firm, resolute, ambitious and persistent pursuit.

Love the motherland, unity and cooperation, silent dedication, courage to explore, perseverance.

Good at observing, constantly solving problems, and persistently looking for the source.

We should have the ability of independent thinking, independent judgment and scientific doubt.

No matter what happens, I will never allow myself to be a little discouraged.

-Addison

Taishan does not let the soil, so it can become big; Rivers and seas do not choose small streams, so they can be deep.

Rees

If you carve but give up halfway, even a rotten piece of wood will not break; If you keep carving, even metal and stone can be carved.

-Xun Kuang.

The great cause of ancient and modern times, university questioners must go through three realms: "Last night, the west wind withered the green trees, and I climbed the stairs alone to look at the horizon", which is also the first realm; "I don't regret my belt widening, and I am haggard for Iraq", which is also the second realm; "Looking for him in the crowd for thousands of Baidu, suddenly looking back, that person is in a dim light", this third realm is also.

-Wang Guowei

When a person does a thing, of course, he must think carefully before starting work; However, after the plan or policy is finalized, it is necessary to determine the goal and move on without hesitation. This is a firm attitude.

-Zou Taofen

Seven, 1) cross out the calculation accounting correction.

(2) "Star" refers to the heap prime theory written by Hua; "Dust" refers to a calculation error in the book.

He's quite right. This teacher is really a talent!

(4) Hua: Good at finding talents.

Chen Jingrun: Dare to put forward your own opinions.

Eight, about 200 years ago, a German mathematician named Goldbach proposed that' any even number can represent the sum of two prime numbers', or 1+ 1 for short. He never proved it in his life, so he wrote to Euler, a mathematician in St. Petersburg, Russia, and asked him to help prove the problem. After receiving the letter, Euler began to calculate. He tried to prove it to the death. Later, Goldbach passed away with a lifetime of regret, but left this mathematical problem behind. For more than 200 years, Goldbach's conjecture has attracted many mathematicians, thus becoming a big unsolved mystery in the field of mathematics. "For an interesting example, mathematics is the queen of natural science, and Goldbach conjecture is the jewel in the queen's crown!