love you like a song

Gu Nan did test Mu Zi'an's ability to answer questions under low temperature, but that was only once, let alone two years ago... Now, she doesn't even know the girl's ability to do experiments...

This knife was extremely sharp, just as Gu Nan was about to say sarcastically, "Mu Zi'an hasn't even practiced chemistry once in two years", when he heard the referee in front of him announce the start of the game.

"Today's topic is to use the iodometric method to determine the concentration of copper and iron in industrial samples. It is divided into three experiments and scored according to the steps and completion time. The full score is [-]."

"The written test is calculated by rushing to answer questions on the answering board after each experiment. There are two questions each time, a total of six questions, and the score is twelve. Two points for a correct answer, and two points for an incorrect answer. Please take your place, and start timing now .”

Women in cheongsams came onto the stage one by one and were divided into two teams.

A team put the experimental reagents on the medicine rack——

浓度为0.008333M的K2Cr2O7溶液、20%的KI溶液、浓度为1M的盐酸、1M的硫酸、5%的Na4P2O7溶液，装在100ml容量瓶内的待测溶液、1%的淀粉溶液以及未标定的Na2S2O3。

The other team put the glassware on the bench—

25ml滴定管1支、10ml移液管2支、100ml容量瓶1个、25ml锥形瓶2个、表玻璃1个、10ml量筒2个、25ml量筒2个、100ml量筒1个、移液管吸球1个、装蒸馏水的洗瓶。

Seeing that all the items are in place, the referee spoke.

"The first question in the experiment: the calibration of Na2S2O3. Additional requirements - repeat three times, and the score will be calculated based on the best one."

As soon as he finished speaking, Lang Ri stood up, and he quickly picked up the burette on the laboratory bench in front of him.

'Oh, it's over. '

Gu Nan covered her face dumbly, lowered her head and thought.

'Next, it is estimated that Doudou will fail due to wrong steps, such as taking the wrong reagent bottle, such as not putting the cap up, such as not paying attention to details when injecting liquid...'

…………

Gu Nan really didn't want to look up at the face on the stage in front of her that she loved and hated, but unexpectedly, Shi Qing, who had been silently taking care of his girlfriend, suddenly spoke, his tone full of admiration.

"well done!"

... In Shi Qing's mouth, it's not bad, so it means very good.

Realizing this, Gu Nan raised her head suddenly, and she saw that Mu Zi'an's movements and postures were quite professional at this time!Keep your eyes straight ahead, stand with your feet shoulder-width apart, and shake the burette with your right hand, as if you are checking whether the burette leaks.

After the inspection, it starts to wash and moisten like flowing water.

Mu Zi'an has a serious face, his heels are slightly off the ground, his left foot is slightly ahead of his right foot, and his center of gravity is leaning forward.The line of sight is on the same horizontal line as the lowest point of the scale and the concave surface of the liquid surface, while observing the experimental changes, while controlling the dosage...

Then she moved.

Mu Zi'an focused his eyes on the reagent bottles on the laboratory table, and took out the liquids with ease and ease in a standard, textbook-perfect posture, and shook them to mix.

Gu Nan was stunned. "......???"

Although this is just a simple calibration of sodium thiosulfate solution without details, but? ? ?

Li Yan breathed a sigh of relief, wiped off the sweat that didn't exist on his forehead, and said. "Looking at your appearance, teacher, I thought Mu Zi'an was terrible at chemistry... No, her posture looks quite old-fashioned and standard?"

Gu Nan continued to be numb, she pulled Li Yan with a sleepwalking face, then stretched out her hand and squeezed his thigh fiercely.

Li Yan immediately bared his teeth and grinned. “……………Ahhhhhhhhhhhhhhh teacher, teacher, I hurt, I hurt, I hurt, teacher!!! (T^T)”

Gu Nan let go of his hand slowly.

"Oh, this is not a dream."

She continued to look into the field, Langri and Mu Zi'an had finished titrating with sodium thiosulfate solution at this time, and began to repeat the previous steps.

先是向锥形瓶注入10ml浓度为1M的硫酸溶液和2ml浓度为20%的KI溶液，在保持溶液无色的情况下，又加入了10.00ml的K2Cr2O7溶液。

Then, cover the Erlenmeyer flask with a watch glass and place it in a dark place, wait quietly for 3 to 5 minutes, and then inject 100ml of distilled water.

But this time, the experiment speed of the two is getting faster and faster. When titrating with sodium thiosulfate solution, there is almost no extra movement, and the speed is like a robot.

Standing on the test bench, the two people coincidentally added 10 drops of starch solution when the color of the mixed solution turned light yellow, and then continued the titration without stopping until the blue color completely disappeared.

The movements of the two are connected more and more seamlessly, and the speed of the fingers is extremely fast, and it is even getting faster and faster!In the eyes of everyone, it almost became a phantom that flashed by, and the sound of the glass vessel was overwhelmed, as if it was about to explode!

Gu Nan looked at the stage and murmured.

"... Li Yan, come here."

Li Yan wept and covered his thighs, but he walked up to Gu Nan honestly and cried. "Teacher, what are you going to do..."

So, in the pitiful eyes of Shi Qing and Mu Jinxiu watching the play, Gu Nan pinched Li Yan again.

Li Yan. "Ci'ao...... Awwhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh. ah!!!"

When did Doudou do the experiment...

Gu Nan let go of her hand and took a deep breath. The air she inhaled was cold and trembling.

She pressed her knees tightly with her hands, leaned forward involuntarily, and stared intently at the two people who were still on the stage.

Another verification.

Ah, Mu Zi'an made a mistake "again".

Gu Nan temporarily put aside the questions of "Why did Mu Zi'an practice her movements" and "It seems that her level is not ordinary", and examined the level of the two from the perspective of a national team teacher.

Lang Ri and Mu Zi'an have experimented twice, two titrations, two mixings, and allocation of time in the dark. Except for some small mistakes, the details of the other steps are no less than thirty .

However, the color of the solution changed, the time was too early or too late, and the liquid leaked... Compared with Lang Ri, Mu Zi'an was the one who made mistakes in details every time.

The string in Gu Nan's heart was so tense that it would break at the touch of it. She stared closely at Mu Zi'an in the arena, and unconsciously even her breathing became shallow.

If you just look at these few times...Mu Zi'an is not as good as Lang Ri.

Not only Gu Nan thought this way, but even Lang Ri, who was a participant in the competition, and the British chemistry fans who were onlookers also thought the same way.

Ha, there was joy in Lang Ri's eyes. The total score of the individual competition was three to zero?Let this girl's score in each test be five points different from her own? ?Ha ha!Five points is really too little!He wants more than eight points every time!

He wants this girl to know what a disparity in strength is!

In the British live broadcast room, at first, the bloody storm against Lang Ri gradually passed, and men and women began to express their opinions in a serious manner.

"This novice's posture is very beautiful, but his level is not as good as that of Lang Ri, and obviously much worse than that of Yin Yue."

"Hey, didn't Lang Ri claim to be 'the most sympathetic to the beauty'? Now it seems that he has a grudge against this little girl? His eyes are so hot that he looks at this Chinese player, so he will be on fire!"

"Stop talking, did you find out one thing!!!"

"what?"

"Look at the small print on the bottom of the TV!"

"Oh my God! What did I see, God!!! A 14-year-old girl is four years younger than Lang Ri! Could it be another 'Shi Qing'-style Chinese genius?!"

"........."

When the time was up, Lang Ri had completed four times with ease, but Mu Zi'an hadn't finished... After she put down the Erlenmeyer flask, the referee stood up and motioned for the two to stop.

"Lang Ri has eight points, and Mu Zi'an has six points. But because Mu Zi'an didn't complete the additional conditions, one point will be deducted and it will be counted as five points." The referee looked at the time and said.

"Now, please stand in front of the big screen and let me choose the test paper."

In the International Chemistry Competition, there are two test papers, A and B, in the written test. There are two questions in the test paper. Usually, paper A is easy and paper B is difficult.However, the competition referee has the right to choose the difficulty level of the contestants' test papers, which is usually determined by guessing the heads and tails of the coins.

The referee tossed the coin high, and when the coin landed on the back of the hand, the referee pressed it tightly with the other hand.

The referee looked at the two people, the number side was positive, and the pattern side was reverse.

Lang Ri seemed to want to show his magnanimity in front of the camera, but at this moment, he even took a step back with a smile, signaling for Mu Zi'an to come first.

Mu Zi'an pointed to the ceiling without hesitation, and said "positive".

The referee opened it, and what caught the eyes of the two was the Roman numeral "1".

Mu Zi'an smiled, she guessed right, in normal practice, there is no need to guess the heads and tails of coins in such a formal way... She remembered - when Mu Zi'an from the previous life participated in the official competition for the first time.

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