Teacher: "Hello students. ”

Zheng Zha and the others stood up and said in unison: "Hello teacher——! ”

Teacher: "Very good, students, please take a seat, now we have officially started the class, please turn to page 143 of the math textbook and do the third problem, this is the topic that the teacher talked about yesterday!" ”

Answer the following questions:

(1) TRY TO GIVE AN X VALUE THAT SATISFIES THE EQUATION OF 4SINGX+3COSX=2 TIMES AND FALLS IN THE FIRST QUADRANT;

(2) Please choose the equation equal to sin (A+B) from the equation of 1~4.

1.sinA+COSB

2.sinA－cosB

3.sinAcosB

4.sinacosB+cosAsinB

Chu Xuan's answer:

（1）X=π/6

（2）4

Teacher's comments:

"Chu Xuan's answer is very correct, and he can understand that the symbol of the angle is not [.], but [π], which is really perfect."

Zhang Jie's answer:

(1) X = Probably 3.

Teacher's comments:

"The teacher understands that you want to use 'probably' to fish in troubled waters, and even if this value is very close to the correct answer, the teacher can't give you a score."

Zheng Zhe's answer:

(2) Probably 3!

Teacher's comments:

"The teacher has seen a lot of students, but you are the first one who wants to mix with this trick in a multiple-choice question."

Luo Yinglong's answer:

(2) It may be ...... 3？

Teacher's comments:

"I just finished grading Zheng Zhe's answer and saw Luo Yinglong's answer, the teacher didn't expect that Luo Yinglong and Zheng Zhe were standing on the same level, and Luo Yinglong can not use question sentences to answer in the future?"

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Teacher: "It's English class time, please translate the following English:

Thisisthebookshelfthatmygrandmotherhadusedregularly。 ”

Chu Xuan's answer:

"My grandmother used to use this bookshelf a lot."

Teacher's comments:

"Correct answer, classmate Chu Xuan is really a genius."

Zhang Jie's answer:

"My grandmother ............"

Teacher's comments:

"Do you only translate the mygrandmother part?"

Zheng Zhe's answer:

"My grandmother ☆ ⊕ ■ △ ◇ ○ ......"

Teacher's comments:

"The teacher wants to ask, except for the part of mygrandmother, do you use the language of the earthlings? Also, can I go to the teacher's office and get a white bottle of medicine? Right on the table, why? Because the teacher felt that he had a heart attack again......"

Overlord's answer:

"My grandmother used this bookshelf a lot."

Teacher's comments:

"Sure enough, I'm a foreigner, and my English skills are good. Also, Zheng Zhe, I don't need to get medicine, my heart seems to be starting to improve. ”

Cheng Xiao's answer:

"My grandmother used a lot of books on this shelf."

Teacher's comments:

The teacher seems to see a little obscenity in this sentence, can you tell the teacher how your language is organized? And Zheng Zhe, you really go get the medicine......"

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Teacher: "It's time for Chinese class, please tell me what the next sentence of the famous poet Li Bai of the Tang Dynasty is in the wine, 'I am born to be useful'." ”

Chu Xuan's answer:

"I was born to be useful, and I will come back when my daughter is gone."

Teacher's comments:

"Very good, it seems that classmate Chu Xuan is very researched about the wine."

Wang Xia's answer:

"I was born to be useful, and my daughter scattered to chase fugitives."

Teacher's comments:

"Classmate Wang Renjia, let's watch less police movies in the future."

Cheng Xiao's answer:

"I was born to be useful, and my daughter is scattered to play hooligan!"

Teacher's comments:

"The last three words are very Cheng Xiao's style, but it's better to do less of this kind of thing in the future. Zhao Yingkong and Zhan Lan over there, remember to call 120 by the way after the fight, I think Cheng Xiao can still be saved. ”

Overlord's answer:

"I was born to be useful, and the mouse son will make holes."

Teacher's comments:

"The teacher understands that you are a foreigner, and it is normal for people not to know, remember not to change the words with Cheng Xiao in the future."

Zheng Zhe's answer:

"I was born to be useful, and I'm not afraid of pain when I burst the iron plate!"

Teacher's comments:

"Zheng Zhe, can you not demonstrate in public when answering questions in the future? Teacher, I have a heart condition...... In addition, Zhao Yingkong and Zhan Lan, after beating Cheng Xiao, remember to ask the hospital to carry an extra stretcher, teacher, I am dizzy now......"

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(Because I don't have any ideas.,So I'll just send a side entertainment.,If you think it's interesting, take a look.) ）