At nearly 5 o'clock, Wu Bin returned home, and as soon as he opened the door, he smelled a pungent fragrance.

"Mom, it's time to make hooves."

Wu Bin put down his schoolbag and went straight to the kitchen.

"Come back, quick, come and have a taste." Wu Bin's mother, who was washing vegetables in the kitchen, shouted.

"Hey, Laile!"

Wu Bin walked into the kitchen, picked up a soup spoon and scooped a bowl of hoof soup, blew a little twice, and took a sip.

"Is it salty?" Wu Bin's mother turned her head to look at Wu Bin and asked.

"It's not salty, it's just right, it's fresh."

As soon as Wu Bin finished speaking, he wanted to take a second sip, when he heard his mother suddenly ask in a somewhat subdued voice, "Isn't it salty?" ”

'Oops, that's not right. ’

Wu Bin, who smelled the strange smell of his mother's words, leaned out of the kitchen and looked at his father, who was sitting on the sofa watching "Happy Playing Big Names", and found that he was also a little angry on his face.

Wu Bin, who understood what was going on, took another sip of soup and said, "I didn't feel it when I drank less just now, but I did feel salty in the second sip, well, it's too salty!" ”

"Huh~ I'll just say it!" Wu Bin's mother's voice immediately raised, "Your father, you have to put two more spoonfuls of salt after tasting it, he is getting stronger and stronger now, and the stinky habits in the unit have been brought home!" ”

"I'm back with some stinky habits! Why are you going online at every turn? When Wu Bin's father heard this, he immediately expressed his dissatisfaction.

"What, I said you wrong?"

Seeing that her mother was about to pick up a spatula and run out of the living room, Wu Bin hurriedly stopped her.

"Don't, Mom, I'll go and tell Dad that you can take your breath."

After speaking, Wu Bin ran to the living room and deliberately shouted: "Dad, this is your fault, hurry up and apologize." ”

"I didn't do anything wrong, I ......"

Wu Bin's father was halfway through his words, and suddenly saw Wu Bin secretly raise his index finger and make a gesture of 1.

"This ......" Wu Bin's father thought for a while after reading it, and then raised two fingers.

Wu Bin thought for a moment and nodded.

Wu Bin's father is good at drinking, but the amount of alcohol is not very good, once when he went out to attend the wedding of the neighbor's son, he secretly greedy for a few glasses of white, and fainted because of the amount of alcohol for a while, Wu Bin pinched him for a while before waking up, and since then Wu Bin's mother has strictly forbidden him to drink.

But there is an exception that can be made, that is, Wu Bin accompanied his father to drink two cups, two votes for one vote, and thinking that it could enhance the relationship between the two of them, Wu Bin's mother said at most, "Don't drink too much." ”

The meaning of Wu Bin's gesture to his father just now is that if he is willing to give in this wave, he will accompany him for a drink.

After finally closing the deal with two cups, Wu Bin's father ran to the kitchen, coughed lightly and said: "Wife, I'm wrong, this soup is still your specialty, I shouldn't interfere, I shouldn't interfere." ”

"Don't come to this set, bring the dishes to the table, and get ready to eat."

Wu Bin's mother also knew that she was a little wrong, and now that she has face, she naturally doesn't say much.

After resolving a "family crisis", Wu Bin sat down silently to drink soup and continued to read his English book.

But he didn't read it for a while, Wu Bin's mother ran over and knocked down his book and said, "Pretend to be energetic when you eat." ”

"Who pretended to be really reading." Wu Bin said and picked up the English book.

"Hey, it's quite similar, do you want to add pocket money?"

Wu Bin's mother naturally doesn't believe Wu Bin's words, what kind of beating sex does her son study, can she still know?

"I don't mean that, I just suddenly think it's interesting to study."

Wu Bin's mother was amused at once, and said, "Okay, good, mom is waiting for you to be admitted to Tsinghua University." ””

Wu Bin didn't expect her mother to believe him all at once, so she simply continued to bury her head in reading.

"It's exciting, isn't it?"

Wu Bin's mother said that she was going to grab Wu Bin's book, but was stopped by Wu Bin's father, who came over for dinner.

"It's always good for a child to read a book, so don't discourage him."

"It's not that you don't know your son, I used to chase him with a broom and he didn't read it, but now you can still like it yourself?"

However, although Wu Bin's mother still didn't believe it, she took back the hand that grabbed the English book.

"It's a privilege to read." ’

Looking at his own mother who no longer spoke, Wu Bin couldn't help but sigh in his heart, even if he took out his mobile phone to read a few messages during the meal, he would be talked about for a long time.

After eating, Wu Bin drank two cups of yellow with his father, and when he returned to the room, he took out the sets of papers that Liu Yushan gave him from his schoolbag, looked at the questions a little and began to do them.

This week, Wu Bin has been dealing with functions almost all the time, and at the beginning he has done a few finger functions and comprehensive application problems of functions, but then the abstract functions that give him the most headache are a little annoying.

Moreover, Liu Yushan and he emphasized that because abstract functions can comprehensively test students' understanding of the concepts and properties of functions, and integrate the definition domain, value range, monotonicity, parity, periodicity and image of functions, the frequency of appearing in the college entrance examination is very high, which is the top priority in learning.

Originally, Wu Bin's knowledge of functions was not so comprehensive, and it was simply a numb scalp to prove this kind of question, but it couldn't be empty, so he had to calculate.

In the end, Wu Bin solved this problem with difficulty with the method of changing the yuan, and the feeling of victory was of course wonderful, and Wu Bin drank Wangzi milk to celebrate.

After celebrating, Wu Bin stretched his waist and continued to challenge the next question.

In 2008, a city built 1 million square meters of housing, including 250,000 square meters of affordable housing, and the relevant departments plan to increase the area of new housing by 5% each year over the previous year, of which affordable housing will increase by 100,000 square meters per year. Under this plan, what is the first year when the area of affordable housing built in that year exceeds half of the area of new housing in that year?

Wu Bin touched his chin and thought for a while, and calculated on the scratch paper.

Suppose the area of new housing in year x is f(x)=100(1+5%)x, and the area of affordable housing is g(x)=25+10x, and 2(25+10x)>100(1+5%)x is obtained from 2g(x)>f(x).

Finally, the known conditions are substituted into the verification ......

"That's X=4." Wu Bin tapped the test paper with a pen.

So the answer is 2012.

Wu Bin, who easily solved a problem, couldn't help but swell a little, humming a little song and continuing to do it.

……

At 2 o'clock in the morning, Wu Bin's mother got up at night to go to the toilet, and when she came out, she found that the light in Wu Bin's room was still on, and she couldn't help but shake her head, "I also said that I want to study hard, why don't I play games all night." ”

After speaking, he walked over and pushed open the door of Wu Bin's room, "What time is it, don't sleep yet!" I see you...... Well? ”

Wu Bin's mother just wanted to scold her, but found that Wu Bin seemed to be ...... Making rolls? Judging from the densely written scratch paper on the table, it doesn't look like it's pretending, or he doesn't need to pretend to show it to himself, after all, for this son, she has long stated that she only requires him to be kind-hearted, healthy, and talented.

"Oh, I'll be asleep right away." Wu Bin turned his head and said with a fairy face.

"Ouch, you kid, you don't work so hard." Looking at Wu Bin with a tired face, Wu Bin's mother revealed distress in her tone.

"The foundation is poor, there is no way, I can only fight." Wu Bin smiled at his mother.

"Are you hungry? I'll go cook you something to eat. ”

"It's a little bit, are there ravioli?"

"Yes, I'll pack it for you now, wait."

Twenty minutes later, Wu Bin, who was eating the hot cabbage and pork-stuffed wontons, said while eating: "Mom, go to sleep, I'll be fine after I finish this roll." ”

"Mom is not sleepy, I just want to accompany you." Wu Bin's mother touched Wu Bin's head, "It doesn't affect you, right?" ”

"It doesn't matter, I can sit here if I want to accompany you."

Wu Bin brought a small chair to his mother.

"It's okay, I'll just stand and watch for a while."

"Okay, then I'll move on."

Looking at the expression on her mother's face, Wu Bin couldn't help but sigh a little, although she always verbally said that it was okay if she didn't like to study, and that she could gain a foothold in society with a good heart, but she was actually very worried in her heart, after all, in this real society, it is really difficult to survive without a good diploma.