Description of an expression (sentence or paragraph) when doing a math problem.

Xiao Fei sat in his seat, writing and writing. There seems to be a steady stream of spring water flowing out of his pen. In less than one class, I actually wrote a composition.

Xiaohong just sat facing the window, and the afternoon sun shone on her round face, making her cheeks more rosy; She holds her chin with a pen, her eyes are wide open, her bright eyes are swimming slowly, and her plump chin is slightly upturned-this is the expression that the math teacher is familiar with and loves whenever she thinks of a more ingenious way to solve a math problem.

Whenever I do my homework, the nib rustles, as if a bird is singing to me, and as if to encourage me: "If you are not afraid of difficulties, climb the peak bravely."

She stood up and answered so accurately, so naturally, so smoothly, as if she had been prepared.

She recited in cadence, with beautiful tone, beautiful expression and moving seat.

He is a naughty boy. He reads too fast and crackles like a fried peanut.

Juanjuan read the text in Mandarin, and her voice was crisp and nice. Even the sunshine is fascinated. She sneaked into the classroom through the window and left it on her book, which she didn't want to leave for a long time.

I read this book greedily, like a hungry lamb rushing into the green grass.

She got into the sea of books, like a fish in the sea, and forgot the passage of time.

He managed to pull himself together and opened the book. From the beginning, he felt that lines of words were moving on it, like flying; Later, I thought it was just a blur, like a nest of ants crawling around on paper.

He buried himself in his homework again, and the room was quiet, except for the rustling of pens on the paper.

Students sit in the classroom, listening attentively to the teacher's lecture, just like dozens of flowers blooming quietly under the watering of hard gardeners.