The main contents of the sixth unit of the Chinese language in the sixth grade volume I of the people's Education Press

The main contents of the sixth unit of the Chinese language in the sixth grade volume I of the people's Education Press

"The words of the sun" first tells us to let people open closed windows to welcome the sunshine. Second, it tells us that the sun wants people to enjoy the beauty of nature. Finally, let's open our hearts
"White Birch" the first section describes a white birch in front of my window; the second section describes the beauty of white birch in snowflakes; the third section describes the beauty of white birch in the silent hazy; the fourth section describes the beauty of white birch in the morning glow

As shown in the figure, in the rectangular coordinate system, O is the origin, the coordinates of a, B and C are a (18,0), B (18,6), C (8,6), the quadrilateral oabc is trapezoid, and the points P and Q start from the origin and move at a uniform speed respectively, where the point P moves along OA to the end a, with a speed of 1 unit per second, and the point Q moves along OC and CB to the end B. when one of these two points reaches its own end point, the And stop moving at the other point (1) If the velocity of point q is 2 units per second, try to write out the coordinates of point Q and write out the value range of t at this time. (3) suppose that the motion of line OC starts from T seconds. When the sum of the distances of P and Q is exactly equal to half of the circumference of trapezoid oabc, can the area of trapezoid be divided into equal parts by line PQ What are the two parts? If possible, request the value of T; if not, explain the reason

(1) The coordinates of O and C are o (0,0) and C (8,6), respectively. Let the analytical expression of OC be y = KX + B, and substitute the two coordinates into k = 34, B = 0. ∧ y = 34x. (2) when Q moves on OC, let Q (M, 34m) be set. According to the meaning of the problem, M2 + (34m) 2 = (2t) 2, and the solution is m = 85t. Then q (85t, 65t) (0 ≤ t ≤ 5). When Q moves on CB, the distance that Q passes is 2T. ∫ OC =The abscissa of Q point is 2t-10 + 8 = 2t-2. Q (2t-2, 6) (5 ≤ t ≤ 10); (3) the perimeter of trapezoid oabc is 44. When Q point moves on OC, the distance of P motion is t, then the distance of Q motion is (22-t). In △ OPQ, the height of OP edge is: (22 − T) × 35. ∧ s △ OPQ = 12t (22 − T) × 35, s trapezoid oabc = 12 (18 + 10) × 6 = 84 When Q moves on BC, the distance that Q travels is (22-t), the length of CQ is: 22-t-10 = 12-t.. S trapezoid ocqp = 12 × 6 (22 − t − 10 + T) = 36 ≠ 84 × 12. In conclusion, there is no such value of T, so that P and Q are equally divided at the same time Perimeter and area

The formula 1) 17.48 × 37-174.8 × 1.9 + 1.748 × 820 2) 5.4 × 3.8-6.5 × 4.4 + 2.7 × 5.4

1)17.48×37-174.8×1.9+1.748×820
=17.48×（37-19+82）
=17.48×100
=1748
2)5.4×3.8-6.5×4.4+2.7×5.4
=5.4×（3.8-6.5+2.7）
=5.4×0
=0

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(6) my grandfather celebrated his 70th birthday, and all his relatives and friends came to congratulate him. Everyone congratulated him on his "good fortune as the East China Sea and long life as the South Mountain". However, my grandfather sighed: "good luck as the East China Sea____ ,______ _____ I quickly stopped my grandfather's words_____ ,______ _____ "Grandfather, your body is stronger than the young man." grandfather laughed, touched my head: "you will play poor mouth!"
(7) To develop the northwest, we have implemented the green ecological strategy of returning farmland to forest and grassland. We can expect that the beautiful ecological environment of "and" chanted by the ancients will reappear in the northwest grassland in the near future
8. Which place of interest does the following poem describe? Which province (city, county) does it belong to? Please fill in the horizontal line and brackets respectively
(1) A thousand feet of water is not as deep as Wang Lun's
(3) Why should Qiang flute complain about willows and spring breeze
(5) (6) Hanshan Temple outside the city, the bell rings at midnight to the passenger ship
(7) If you want to compare yourself to the west, it's always appropriate to wear light make-up. (8) when my old friend left for the west, fireworks went to Yangzhou in March
(3) "To persuade you to have a glass of wine", "the ancients had chicken millet", "who in the world didn't know you", "there was only one person who planted Cornus everywhere", "and" to ask where the guests came from "
The characters referred to by the dotted words in the above sentences are
(4) "Li Du" refers to Li Bai and Shi Sheng, whose poems are called. "Xiao Li Du" refers to "poem devil", "poem ghost" and "poem Buddha",
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Grandfather's 70th birthday, friends and relatives all came to congratulate. Everyone congratulated grandfather "good fortune, longevity than Nanshan", but grandfather sighed: "the setting sun is infinitely good, just near dusk." I quickly stopped grandfather's words: "Mo Dao Sangyu late, for the Xia still full sky." grandfather, your body is stronger than young people. "Grandfather laughed, touched my head:" you will play poor mouth! "
(7) To develop the northwest, we have implemented the green ecological strategy of returning farmland to forest and grassland. It can be expected that in the near future, the beautiful ecological environment of the ancients singing "the sky is blue, the wild is vast, the wind blows, the grass bottom sees cattle and sheep" will reappear in the northwest grassland
8. Which place of interest does the following poem describe? Which province (city, county) does it belong to? Please fill in the horizontal line and brackets respectively
(1) Taohuatan is a thousand feet deep, not as deep as Wang Lun. (Jingxian County, Anhui Province) (2) I don't know the true face of Lushan Mountain, only because I am in the mountain. (Jiujiang, Jiangxi Province)
(3) Why do the Qiang flute complain about willows? The spring breeze does not pass through Yumen pass. (Yumen City, Gansu Province)
(5) In the clouds of the White Emperor, a thousand li Jiangling is still in one day. (Fengjie County, Chongqing city) (6) Hanshan Temple outside Gusu City, the bell rings at midnight to the passenger ship. (Suzhou City, Jiangsu Province)
(7) If you want to compare the West Lake with the West Lake, light make-up is always appropriate. (Hangzhou City, Zhejiang Province) (8) my old friend left the Yellow Crane Tower in the west, and fireworks went down to Yangzhou in March. (Wuhan City, Hubei Province)
(3) "To persuade you to have a glass of wine", "the ancients had chicken millet", "who in the world didn't know you", "there was only one person who planted Cornus everywhere", "and" to ask where the guests came from "
The characters in the above sentences are yuan Er, Meng Haoran, Dong Da, Wang Wei and he Zhizhang
(4) "Li Du" refers to Li Bai, who is called the immortal of poetry, and Du Fu, who is called the sage of poetry. The latter's poems are called epics. "Xiao Li Du" refers to Li Shangyin and Du Mu. "Poem devil" is Bai Juyi, "poem ghost" is Li he, "poem Buddha" is Wang Wei

M is the middle point of AB on the side of square ABCD, e is a point on the extension line of AB, Mn ⊥ DM, the bisector of intersection ∠ CBE is at n
How to prove RT △ dam ∽ RT △ MFN

It is proved that no is perpendicular to AE and O, because Mn is perpendicular to DM, angle AMD and angle NMO are complementary angles, so right triangle dam is similar to right triangle NOM, because am = half Da, so no = half Mo, angle NBO = angle NBC = 45 degrees, so no = Bo = half Mo, that is, no = MB = am, so right triangle dam is congruent with right triangle NOM

How to calculate 6.4 × 0.25 + 3.6 △ 4
Such as the title

6.4×0.25+3.6÷4
=6.4×0.25+3.6×0.25
=(6.4+3.6)×0.25
=10×0.25
=2.5

Second, second radical operation. Urgent
(√5 +1)(√5 -1)
(2-√7)(√7 +2)
(2√3 +1)^2
(7-√3)(2√3 +1)
When a = √ 3, find the value of the algebraic formula (√ 3-2a) (1-A) - A (2a-1)

Square difference formula
(radical 5) 2 - (1) 2 = 5-1 = 4
(2) 2 - (radical 7) 2 = 4-7 = - 3
Complete square formula
4x3 + 4x radical 3 + 1 = 13 + 4x radical 3
Multiplication of polynomials
14x radical 3 + 7-6-radical 3 = 4 + 13X radical 3
Algebraic multiplication
Root 3-root 3xa-2a + 2a2-2a2 + a = root 3-root 3xa-a
Substitute a = root 3 into root 3-root 3x root 3-root 3 = - 3
Note: 2 written after represents square

In the quadrilateral ABCD, ab = BC = CD = Da, angle bad = 120 degrees, M is the point on BC, if the triangle amn has an angle equal to 60 degrees
Three study and five practice, standard edition of people's education for eighth grade mathematics, 50 pages, 15 questions

Given x (6m NX) - NX & # 178; there is a factor 6-x, find the value of M and n

x(6m-nx)-nx²
=6mx-nx² -nx²
= 6mx-2nx²
2n=1,n=1/2
m=1
6x-x²=x(6-x)

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Put the nine numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 in the brackets to make the equation true
（）（）（）（）*（）=（）（）（）（）