After returning from Xu Zhihong's place, Lu Shixian was still a little uneasy.

Although he didn't have the relevant experience of becoming a doctor before, he has been in the academic circle for so many years, so he has a good understanding of the relevant situation.

The schooling period of doctoral students is generally 3 to 4 years, similar to that of master's students, there will be courses arranged in the first academic year.

Doctoral courses are still composed of public courses, degree courses, professional courses, and elective courses.

At this stage, there will be no final exam, because this level of test is too low-level for doctoral students.

Instead, you need to submit a course paper, or give a public academic report.

But after all, attending classes is just an adjustment at the doctoral stage. Completing scientific research work is the core of a postgraduate study career, and obtaining scientific research results and completing a graduation thesis is also the only way to graduate.

Even after ten years, many colleges and universities have a graduation requirement for doctoral students to publish at least one core paper or above before they can apply for graduation.

Not to mention foreign SCI and EI, there are many core journals such as SSCI, CSSCCI and CSCD in China alone.

It seems easy to publish a core article among so many choices, but different universities have different requirements, and some universities have the minimum requirement of Beihe.

However, the number of papers that journals can publish is limited, and the number of Ph.D.s that need to graduate each year is far greater than this, which has caused many people to choose to postpone their graduation.

In addition to scientific research achievements, doctoral thesis is also a stumbling block on the way to graduation.

Generally speaking, the word count for dissertations for natural sciences is about 50,000, and the word count for social sciences is slightly more, at about 80,000.

But the doctor is not ordinary.

In view of the unusual population base of Huaguo, when you leave the school, you will find that there are very few people who actually have a doctorate.

Therefore, the word count of a graduation thesis that meets the qualification requirements is generally around 200,000 words, which is almost equivalent to the content of a monograph.

It has extremely strict and even harsh requirements on students' comprehensive abilities.

So it is not difficult to explain why there are so many Ph.D. students who postpone their graduation every year.

Deferable graduation is only a palliative, not a permanent cure.

The resulting pressure sometimes becomes unbearable in life.

Thinking of this, Lu Shixian couldn't help sighing: "It seems that sometimes the more books you read, the more comprehensive your thinking will be, and the more thorough your view of the world will be."

Shaking his head to shake the heavy topic out of his mind, he turned around and walked to the library.

He didn't dare to guarantee that he would have no problems at all, but he would have problems now if he didn't read the book.

Half a month later.

Lu Shixian put down the "Epigenetics" in his hand, and looked at the time on the watch on the right, it was already two o'clock.

He took genetics courses for several days in a row. The courses at the beginning of the semester were really simple for him, and he really couldn't get enough.

So, he started feeding himself extra meals.

Epigenetics, as a branch of genetics, studies the changes in gene expression that can stabilize inheritance without changing the nucleotide sequence.

Its existence explains many problems that classical genetics cannot explain.

Reluctantly marking page 32, Lu Shixian took a water glass and a lesson plan to the School of Life Sciences.

After reading the book obsessively all morning, he at least remembered that he was going to teach people.

So it took half an hour for him to complete the lesson preparation.

That's right, academician Xu obviously won't tease him, his words are not groundless.

At Yanda, many academicians choose to teach undergraduate courses.

This is a grand event that cannot be seen in most colleges and universities.

However, due to some reasons, Xu Zhihong has not undertaken teaching tasks for several months.

So he was arranged to be a teaching assistant of Professor Ma Yuheng.

Lao Ma is still doing his old job, and as always, he undertakes "Cell Biology" for most of Yan's undergraduates.

But unfortunately, a teaching assistant is not an assistant professor, and its level is probably between ordinary lecturers and associate professors.

For newcomers who are new to the forum, the job assigned by the college to teaching assistants is probably to correct homework and test papers.

With the passage of time, the more senior the teaching assistant will become, the after-class question answering expert or the experimental class assistant.

But there are also very few cases where, under the unintentional or intentional arrangement of the professor, some teaching assistants will undertake the teaching task of a course.

Lesson preparation, teaching, assigning assignments, and answering questions are obviously beyond the scope of the teaching assistant's work.

For Ma Yuheng, it was obviously the latter.

As soon as he heard that Lu Shixian became his teaching assistant, he was overjoyed, so he immediately started to think about it.

That's why Lu Shixian was so hard-pressed.

This is the first time he has taught the students of Yanda University.

But it's not the first time to teach people, so I don't panic at all.

At 2:20 p.m., Lu Shixian came to classroom 602 of the biology teaching building 10 minutes early, and walked straight to the last row where people were sitting.

Just looking at it, he nodded in satisfaction. Yanda's learning atmosphere is not blown out, it is still excellent.

There was a lot of people coming, and most of the students were previewing or reviewing to get familiar with the contents of the textbooks.

Occasionally speaking to each other, it should also be discussing study-related issues.

"Did you find a serious problem recently?" In the penultimate row, a boy wearing glasses suddenly turned sideways and complained with righteous indignation: "Our college is too unfair!"

He heard this sentence as soon as he sat down, and he couldn't help but concentrate on listening to it.

Although it has little to do with him, his role has changed.

Assistant teachers are also teachers, after all, they are paid by the school.

We still need to pay more attention to and care about some of the students' ideological dynamics and psychological states.

"You also found out?" The boy's words quickly resonated, and he immediately got a response.

But the corners of Lu Shixian's mouth twitched slightly as he couldn't help it.

"Why is the teacher of our "Cell Biology" this year an old professor, but it's the turn of the freshmen to be the new teacher!!!"

"Although Professor Ma is okay, but I choose the female teacher with black silk!"

"Second! It's a pity that good things always happen in the next session, and it's not our turn."

"Brothers, only when you take the initiative will you have a story. I have already decided to go to class next time."

"Well said! Call me when you go."

"Uh, let's talk about this next time."

Lu Shixian next to "Ahem" has decided to take back his previous opinion.

Regarding the fact that Lao Ma was rejected by the students, he was ready to talk to Ma Yuheng carefully.

"Retaliate" about the old horse, and make a small report by the way.

Pain! It hurts so much!

May I ask how the teaching level of the black silk female teacher can compare with the respected old professor?

This unhealthy trend must be suppressed!

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