Chu Yu leaned closer; if she remembered correctly, this was a math problem from the 1982 college entrance exam, specifically a question about functions.
Chu Yu remembers because in her previous life, her high school was a well-known "college entrance exam factory" in the country. In the first semester of her junior year, she learned all the content of the three years of high school, and in the second semester of her junior year, she began a comprehensive review, with a small test every two days and a big test every three days.
When all the exam questions were exhausted, she took all the past exam papers from the time the college entrance examination was reinstated and worked through them.
When Chu Yu graduated from high school, he was admitted to a pretty good university. Although it was not one of the top three, in a province known for its intense college entrance examination system, such a score was considered a remarkable achievement.
During her university years, she worked part-time tutoring a pair of high school twins who were struggling academically. In order to earn a higher salary, she studied the patterns of college entrance exam questions diligently and became very familiar with all high school subjects, especially math.
She didn't find the question difficult, but it's said that less than one-tenth of the people who got it right back then did.
"Is this question difficult?" Chu Yu smiled.
Jiang Qi frowned slightly; he hated being disturbed while doing his homework.
Is it strange that you can't do this problem? Let alone students, even teachers often have problems they can't solve. When their teacher is explaining a problem, he often gets stuck on it himself.
Of course, you can't blame the teachers. The college entrance examination has only been reinstated for a few years. There are only a few types of reference questions on the market, and the teachers are also groping in the dark, completely unable to figure out where the test points are.
Jiang Qilue has always had excellent grades, consistently ranking first in his grade. Even so, he wasn't entirely confident about the college entrance examination. Last year, Dezhong High School had a total of seventeen students admitted to undergraduate programs. Compared to one or two students from rural high schools and five or seven from county high schools, seventeen seemed like a pretty good number.
Where does this number come from? Students who fail to meet the standards in the preliminary and mock exams are advised by the school to voluntarily give up their college entrance examination registration. With the numerator remaining unchanged, the smaller the denominator, the larger the number obtained.
Only through these routine procedures was the school able to barely maintain its college entrance examination pass rate.
For a weak city like Deyang in terms of college entrance examination difficulty, it cannot be summarized in a few words. And for Chu Yu, a girl who sells quail eggs and roujiamo (Chinese hamburger), to be so arrogant made Jiang Qi, who had been tormented for more than two hours, extremely irritated.
Whether the questions are difficult or not, you'll know once you try them.
Jiang Qi simply handed her the pen, saying, "You know how to use a pen, here you go."
Chu Yu didn't refuse. She wanted to see what kind of questions the students in 1983 were working on, and maybe she could finish her studies while making money.
She took the pen and notebook, and hesitated for a moment:
"There are three ways to solve this problem. The first is to convert all angles to acute angles and then use the sine and cosine formulas..."
Chu Yu's problem-solving approach was clear, and Jiang Qilue wasn't stupid either; he grasped the concept immediately. After she listed out three methods, Jiang Qilue had already understood the problem. He was deeply discouraged. He spent every day studying books, yet he still couldn't solve so many problems. This girl probably didn't touch a book even once a year, yet she could solve such a difficult problem.
The difficulty of a single question is not enough to determine the outcome, but differences in thinking can be devastating.
Feeling crushed was unpleasant, so Jiang Qi frowned slightly and pulled out a test paper. "Do this one too."
Jiang Qilue was holding a handwritten photocopy of a math exam paper. The paper was grayish, thin, and translucent, but Chu Yu paid no attention to it.
The shortage of materials in 1983 was evident in every aspect. It is said that when the college entrance examination was reinstated, there was not even enough paper in the country to print the exam papers. It was good enough to have exam papers to do, so how could one be picky?
Chu Yu has always been careless when it comes to math problems. She works out the answers as she goes, too lazy to even use scratch paper. She just writes and draws on the test paper to fill in the answers. She wants to finish the test paper as soon as possible so that she can sell all the quail eggs and buttons before dark.
A middle-aged man came to buy quail eggs.
"The old man in my ward's son said he bought them here. Ma'am, do you still have quail eggs? Give me thirty."
Today, Shu Hui originally planned to take Chu Chu to the hospital for a follow-up check-up, but Chu Chu gets nervous around strangers and was afraid that going to the hospital would cause delays. So, she asked Deng Fangping and Shu Aiguo to take her to the hospital, while she stayed behind to sell roujiamo (Chinese hamburger).
Chu Yu was still doing her homework. Shu Hui knew the price, so she went up to help the middle-aged man pick out thirty large quail eggs. They were six cents each, totaling one dollar and eighty cents. Selling quail eggs was definitely more comfortable than selling roujiamo (Chinese hamburger). You could take as many as you wanted, and there was no need for processing. Every time she collected money, it was never less than one dollar. In a short while, she sold about two hundred quail eggs.
Once Chu Yu started working on the problem, he couldn't hear any other voices. The last problem was quite difficult, and even Chu Yu had to try several different solutions before he finally figured it out.
When faced with a difficult problem, as long as you keep your mind focused and try each step according to the information provided in the question, you will eventually be able to solve it.
Chu Yu's arms ached when she finished the test, so she tossed the test paper to Jiang Qilue.
The 1983 exam was not as difficult as I had imagined, but it was not easy either. As the saying goes, the college entrance examination is like a battlefield in any era. It requires not only ability but also a certain amount of luck. Only those who have both ability and good luck can ultimately triumph in the college entrance examination.
"It's all done. Please check if there are any mistakes."
Jiang Qilue's brows could trap a fly. Despite his carefree attitude and messy hair, he always cherished his exam papers. He would carefully place each exam paper inside his book, keeping it as flat as if it had been ironed.
Chu Yu, on the other hand, started doing calculations on the exam paper, seemingly not taking this rare exam paper seriously.
Jiang Qilue couldn't tell whether her answer was right or wrong. This test paper was a special training paper that the homeroom teacher, Ms. Zhang, gave to the top twenty students in the class. Ms. Zhang had obtained it from a colleague in another city. Because the test paper was difficult, she simply didn't give it to the students who ranked lower, for fear that they wouldn't be able to answer a single question and that it would dampen their enthusiasm for learning.
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