Chapter 497

The door to the conference room was pushed open.

Among the six people, the middle-aged professor from the university system was the same as Gu Lu, and asked as he walked in, "Professor Gu, what's the matter, calling us all over in such a hurry?"

"Professor Gu has already got the first draft of the test questions and called us over to have a group discussion, polish the test questions, and estimate the overall difficulty of the test questions. It was not Gu Lu who answered the professor's question, but another member of the proposition group in the conference room.

"The first draft of the exam questions has come out, so soon!" the professor had a look of surprise on his face that could not be concealed.

It's only been a long time, less than a day!

Gu Lu had already selected 21 test questions from the more than 1,000 questions in the question bank to form a set of test papers.

This efficiency ......

Compared with previous years, it is indeed a lot faster!

You must know that although the difficulty of this work is not too high, it is better because the amount of questions is too large, and it will take a lot of time for the leader of the proposition team to read all the questions in the question bank.

In previous years, it took more than two days for the leader of the proposition team to complete the selection of the first draft of the test questions.

And Gu Lu was much faster than them.

It took less than a day to get it done.

He is worthy of being the first person of the young generation in the field of mathematics in China!

The university professor sighed, then walked over to the conference table and sat down in his place.

Gu Lu, who was sitting on the main seat, coughed lightly, "Since everyone has arrived, then let's start today's meeting." ”

"As you know, the first draft of the college entrance examination paper has been screened. Gu Lu handed out the several test papers printed in front of him to everyone.

"The set of test papers in front of you is the first draft of the test questions that I screened out, and the purpose of convening here again today is to let everyone have a collective discussion on the first draft of the test questions, and then realize the refinement of the test questions. ”

This set of test papers, which are pieced together by different candidates, is still quite rough.

The next work of the proposition group is to realize the unity of the style of the entire set of test papers through the fine-tuning of the questions.

Several people in the conference room bowed their heads and roughly scanned the entire test paper.

Ten choices, five fill-in-the-blanks, and six questions!

There are three standard question types, a total of 21 questions!

And everyone can also see that Gu Lu obviously put in a lot of effort when he came up with the question.

The twenty-one questions basically examine most of the knowledge points contained in high school mathematics.

Also, for the same type of question, there is no similar situation of the knowledge points examined by the two questions.

After a cursory sweep, everyone turned to the first question again, and looked carefully at one question after another from beginning to end.

On the test paper, Gu Lu printed the reference answers to each question on it.

So it's still easy for everyone to read.

By going through the steps in the answer in your mind, you will probably know the specific difficulty of a question.

After more than ten minutes of effort, everyone browsed to the two finale questions that Gu Lu was responsible for.

The twentieth question is a derivative problem.

[Known function f(x)=(2+x+ax^2)ln(1+x)-2x.

(1) If a=0, it is proved that when -1<x<0, f(x)<0; When x>0, f(x)>0.

(2) If x=0 is the maximum point of f(x), find a.]

Just because the questions are quite short and concise doesn't mean that the questions themselves aren't too difficult.

On the contrary, the difficulty factor of this question is quite high.

This can be seen just by looking at the formula under the title, which is dense and almost fills all the blanks.

The first question of this question is okay, and it only needs a slightly more complicated monotonous judgment to solve it.

But the key is the second question.

There are not only maximums and minimals, but also quite complex derivatives of functions.

But that's just the appetizer.

What's more hardcore is that if candidates want to solve this question correctly, they need to have multiple categorical discussions.

Underneath each discussion is a rather cumbersome long list of formulas.

In terms of difficulty coefficient alone, the difficulty of the second question of the penultimate question has surpassed the last question of last year's national finale.

As you can imagine.

The last finale, Gu Lu soared to what extent the difficulty had soared.

Sure enough, it was not at all expected.

They already felt a little toothache just by scanning the last question stem of the test paper about elliptic curves.

It's so hard!

They sighed inwardly.

They not only feel that this finale question is too difficult, but also feel that this year's college entrance examination candidates are too difficult.

Is this the last life that blew up the entire galaxy, it just happened that I caught up with the college entrance examination in this year, and I was born more than a year early!

The reference answer to the penultimate finale question is to fill in the blank parts of the answer below.

And the last question is even more ruthless.

The space underneath the test paper was completely insufficient, and some of the answers were printed directly on the back of the test paper.

When I finished reading the whole rather responsible derivation and proof process of the finale, everyone's expressions were already a little numb.

If it weren't for the fact that everyone is still more conscious now, they would even begin to suspect that they are not participating in the college entrance examination proposition work, but the proposition of the National High School Mathematics League.

But they couldn't find any fault with Gu Lu's two finale questions.

The knowledge points examined by the questions are completely within the textbooks and examination syllabus, and the questions are not deviant and strange, and can even reflect the degree of differentiation and selection.

In addition to the greater difficulty, everyone can't pick the bones even if they want to pick the bones in the eggs.

"Professor Gu, the last two finale questions, are they too cruel for that group of children. A member of the proposition group spoke in a distressed tone.

"Not cruel, not cruel. Gu Lu smiled and waved his hand, "Where is this!"

The corners of everyone's mouths twitched at the same time.

According to the meaning of Gu Lu's words, Gu Lu seems to be just a small test this time.

Wait for next year and the year after next, maybe it's time for Gu Lu to show his talents.

Gu Lu's fingers tapped lightly on the conference table, "Everyone has already read the questions on the test paper, since they have finished reading, then let's start discussing it directly." ”

"Under the condition of ensuring that the difficulty of the test paper remains unchanged, the test questions are slightly modified to ensure the unity of the style of the test paper. ”

Next, let's move on to the discussion.

Gu Lu wrote down everyone's opinions one by one, and then voted.

Four hours later.

After a long debate, a set of refined test papers was released.

Gu Lu looked up at the window, the half-circle moon was already hanging in the night sky.

It's twelve o'clock in the evening.

Gu Lu got up and stretched, "That's all for today's meeting, tomorrow I will start the review work, probably the day after tomorrow we can take the test, after the test, our work will be over!"