The philosophical confrontation did not bring much improvement in the relationship between the two tsunderes. In the blink of an eye, as soon as the weekend passed in the tense review, the final exam began among the students of Fudan High School who were facing the enemy.

In addition to mathematics, which is an insurmountable barrier for Cheng Xiaoyu in the exam, Cheng Xiaoyu can be regarded as a brilliant review of other subjects. Especially in English, with a full score of 100 points, Cheng Xiaoyu estimates that he has a perfect score of nine out of ten. Tragically, only half of the total score is counted in English.

The final exam was carried out very quickly, three subjects a day, two days to finish, physical education had been completed last week, and Cheng Xiaoyu's physical education score was unfortunately the first in the class. Fortunately, the whole class is accustomed to him, the penultimate one.

Cheng Xiaoyu is relatively good at Chinese, and the questions are not too difficult. The first part is to fill in the blanks with famous sentences, the first question is Mencius's "Born in Sorrow, Died in Peace", into the family can not be a scholar, fill in the back, this kind of Cheng dù difficulty for Cheng Xiaoyu as long as the traditional Chinese characters are good, it must be no problem, out of the invincible foreign patients Guoheng died. Cheng Xiaoyu filled it in with a beautiful Pang Zhonghua pen handwriting. Then the latter one is even simpler, the beacon fire is in March, and the family letter is worth 10,000 dollars. Du Fu's "Spring Hope". After filling in seven or eight such questions, it is even more difficult for our literary teenagers to analyze the "Book of Ropes with Wang Kun".

Cheng Xiaoyu wrote an essay question like chopping melons and vegetables all the way, writing an essay with a dream as the theme, with a self-determined idea, self-selected style (except for poetry), self-proposed topic, no plagiarism, and the best word count is not less than 800 words.

Cheng Xiaoyu was not happy when he saw the four words except poetry, as a poetry lover, the lack of contemporary poetry cannot but say that education has a lot to do with it. Cheng Xiaoyu thought for a moment and felt that the score was not so important to him anyway, and he was not as energetic as he was flying once, so he wrote the title "Dream as a Horse" vigorously and vigorously, and the subtitle "Except for Poetry".

I want to be a faithful son from afar

and the ephemeral lover of matter

Like all poets who dream as horses

I had to walk on the same path as the martyrs and the clowns

All men will quench the fire

I alone hold this fire aloft

This fire is a great bloom and falls in the sacred motherland

Like all poets who dream as horses

I used this fire to spend the vast dark night of my life

This fire is the language of the great motherland and the Liangshan walled city built by throwing stones

Dunhuang with dreams as the soil - the bones that will be cold in July

Like snow-white firewood and hard strips of snow

Horizontally placed on the Mountain of the Gods

Like all poets who dream as horses

I threw myself into this fire, and these three are the lamps that imprison me, and spit out light

Ten thousand people will walk past me to build the language of the motherland

I'm willing to start from scratch

Like all poets who dream as horses

I would also like to sit through the prison

Among the gods, I am the only one who is the most perishable and irresistible

The speed of death

Only food is what I cherish

I hugged her tightly and hugged her to have children in her hometown

Like all poets who dream as horses

I would also like to bury myself on the high mountains around me and watch over my peaceful home

I am infinitely ashamed in the face of the river

I am in the emptiness of my life, and I am tired

Like all poets who dream as horses

Time flies, and there is not a drop left

There was a horse in the water droplet, and it was all gone

A thousand years later, if I were reborn on the banks of the motherland

A thousand years later, I once again have China's rice paddies and Zhou Tianzi's snow-capped mountains

Pegasus tap

Like all poets who dream as horses

I choose the eternal cause

My career is to be the sun all my life

He is from ancient times to the present day

He was brilliant and bright

Like all poets who dream as horses

Finally I was carried into the immortal sun by the gods of twilight

The sun is my name

The sun is my life

The mountaintop of the sun buries the corpse of poetry – the millennial kingdom and me

Riding a 5,000-year-old phoenix and a dragon named "Horse" - I will fail

But poetry itself will triumph with the sun.

After writing, Cheng Xiaoyu looked at the test paper and was silent for a moment, the once incomparably brilliant poetry will eventually be lonely in this fast-running country, and those great poets who shine in the brilliant galaxy of history have written all the magnificent poems in China, and we can only look up. This cannot but be said to be the sorrow of civilization. The monster of the economy dragged the modern urban culture to mutate, and this heavy and cold cement and steel building crushed the hometown and powdered our values.

Poetry is nothing more than a concubine abandoned by the government.

And our generation can only think that there is only love in the words in the pop songs.

Cheng Xiaoyu handed in the first paper, and left the school in the hopeless eyes of the whole class, the child, who did not understand the last sentimentality of a young man.

In the afternoon, it was the math exam, Cheng Xiaoyu flipped through the test papers, his head was big, he was dragged back by mathematics and English in his previous life, and he didn't get good results in the college entrance examination, and he only knew Dolaimi's instigation in this life, but he didn't know 12345. Looking at the same mathematics as the book of heaven, Cheng Xiaoyu began to use his imagination.

In the Cartesian coordinate system xOy, the polar coordinate system is established with the coordinate origin as the pole and the positive semi-axis of the x-axis as the polar axis, and the polar coordinate equation of the semicircle C is p=2cosθ,θ[0,].

(I) find the parametric equation for C;

(II) Let the point D be on C, and the tangent of C at D is perpendicular to the line l:y=x+2, and determine the coordinates of D according to the parametric equation you get in (I).

Cheng Xiaoyu wrote in the answer column:

I hit Jiangnan and walked through

The face of the season is like the blossoming of a lotus flower

The east wind does not come, and the catkins in March do not fly

Your heart is like a little lonely city

Just like the bluestone streets are late

The sound is not loud, and the spring curtain in March is not revealed

Your heart is a small window closed to it

My Dada's hooves are beautiful mistakes

I'm not a returnee, I'm a passerby......

For another question, let the function f(x)=|x+|+|x-a|(a>0)。

(i) Proof of: f(x)≥2;

(II) if f(3)