Page 21.x-x-1/3 =12, 2x+3 = 7x-4 = 7/5 [2] 2x-x = 7 [3] (30% x-4 3 5，( 1)X = 0(2)X =- 17(3)X =-26/7(4)=- 1/2
Page 3 1,, solution; Let the hundredth digit of the original three digits be x, 100x+10 (4x-3)+3x+1+270 = (4x-3) times100 to obtain x = 2 2, and the solution; Let the mother be x years old and the female be y years old, and X+2=(Y+2) times 6 (Y+22) times 2=X+22, and X=28 Y=3 3. Let the side length of the original square be x, 3X=4(X-3) X= 12 4. Slightly 5; Solution: Y student with dormitory X requests accommodation, 4X+20=Y (X- 1)8=Y, x = 32y = 36; 15X divided by 3= 12X divided by 2= 1 10.
Page 4 7; Solution, assuming that the original number of days is x days 240+400=280X-200, the solution is X=6 6 times 240+400= 1840 8, Qinghai-Tibet Plateau in Arabian Peninsula 9, Qinghai-Tibet Plateau in Malay Archipelago 10, East Asia and West Asia 1, 70% 6540.
Page 5 CBA 4, x = 6 15, x = 18/ 126, x = 140.
Page 6 9. Salt, vitamins, sugar, protein fatty water 10, absorbed and digested by human body 1 1 blue yellow 12, glucose, amino acids and glycerol fatty acids.
13, aspartame 14 omitted 15, no change, no starch, blue, starch, no change, starch digested in saliva does not digest starch.
Page seven; Solution, let ten digits be x10x+n-x+10 (n-x)+c =11N2, okay 3, let the class have x people 2/3x+4 =1/3x.
96-96 times 2/3-4=28 28 times 2/3= 16.
Page 8 1, 6; 4; 3 2，3/2 3，2 1 4，3/8 5，9/7 6，X，Y= - 2/3 7M= 1，N=2 8= - 66 10B= - 7
Page 9; ; BCB 4, rice and wheat are in New Delhi, Mumbai, Kolkata, Pakistan and Bangladesh.
Page 10; 1, 2 2, greater than 77 3, 2 4, X=Y= 1 5, -276, 32x+32y = 4007, -9. Anyone who wants it can come and find it.
Page 1 1; 1, c, b, c, A 5, artery; Veins with thick wall, high elasticity and fast flow rate; Thin wall, small elastic cavity and small capillaries; The tube wall is extremely thin, the flow rate is the slowest, and the elasticity is small. The lumen 6, the inner diameter of the tube is extremely small, the flow rate is the slowest 7, and the movement and breathing are 8, Y= 1=5/3.
Page 12; X=23/ 15 Y= 13/8
Page 13; Solution, let the decimal be x,10x+x+1= x+x+1x = 00+1=12, the solution, let the gold medal have x blocks 3x+6/5x = 42x = 62. 10 times 6/5= 12.
Copper; 10 times 2-5= 15 3, solution, let the express speed x idle speed y get X=34 Y= 12 4, solution, let Party A and Party B do x every hour, and let part Y get X= 184.
Y=79 5, omitted
Page 14 answer; B，A，D，D，C，A，A，B
Page 15; C, D, A, D, D, 6,67.5 degrees 7, median line 8, greater than 4 9, 10 cm 10, 4,4,3, 12, three, one, one 13,/.
Page 16; 16, solution, 4,6,8 obtuse triangle 17, 0 degree less than x less than 180 degree18,75 degree.
Page 17; C, D, B, B, D, A 6, 135 degrees, 120 degrees, 1 15 degrees 7, 36 degrees 8, 30 degrees, 40 degrees 9, grow up when inhaling and contract when exhaling.
Page 18; 1.35 degrees 4.45 degrees
Page 19; B, c, b, c, B 6, 1 8,2 is less than m 9,6 cm10,75 degrees10,20 degrees.
Page 20; 12, 120 degrees 13- Egypt, Egypt 14, Tuzil, Suyinshi 15, high temperature, scarcity, lack of 16, reserves, output, output.
Persia 17, white, Arab, Islam,-Holy City 18, Judaism, Persia, Yin, Christ 19, Middle East,
Page 2 1 C, B, B, C, B 6, 65-degree isosceles triangle property 7, equilateral, acute angle 8, 10 9, 120 degrees 10 equilateral triangle 1 1.
40 degrees 12, 30 degrees 13, circle 14, origin, number axis, inverse number 15, take
Page 22; 16, isosceles triangle 2, equilateral triangle 2, square 3, regular pentagon 4, regular hexagon 3 18, Europe, 1957, Economic Union, France.
Italy, Netherlands, Belgium, Fort Lu Sheng, Germany, 12 19, EEC, EV 20, politics, commerce, tourism 2 1, politics, economy.
Page 23; A, b, a, d, c, 7, 9, 40 degrees larger than the center line of No.8.
Page 24; Cornea and pupil, curvature, lens pupil, lens, vitreous body, retina, dark optic nerve, ciliary body, pupil body 1768.
Page 25; A，C，B，B，D，A，C，B
Page 26; 1,43 2,7 3, 17/3 5 17/3 6,63,66 7,2. 16,2. 16 8, 16, 16,20,2 1 9,35,35
Page 27; 611/23 93% 0.01139500 3,5.5, 1 7/ 12 4, fairness is because 50% of them are the same.
Page 28; A, C, B, D 5, diagnosis, appropriateness, scientificity, appropriateness and rationality 6, smoking and drinking Du 7, World No Tobacco Day, International Anti-drug Day.
The first page; 1-3ccdcd 4, Dragon Boat Festival, eating melon seeds is to remember the story of Qu Yuan jumping into the river.
The second page; 1 - 5CCAAC 6 - 10GCFDA
Page three; 1, suburbs, parks, the earth, flowers and trees 2. He is eager to get the fruits of solar energy and bend the branches to personify 3. The beauty of spring, summer, autumn and winter 4. Qingming shows that the scenery in early winter is pure and selfless 5. End the full text and point out the sweetness of winter 6. Because early winter is sweet and clear, it symbolizes the solemn and safe arrival of spring.
Page 4, 1, where is 2, its life 3, is there a 4 I can 5, all from 6-15 dadbbcdbb.
Page five; 1, Chang, Cui 2, Lang, Lang 3, Zheng, Zheng 4, -5, jump, tearful, tired 7- 10 badb.
Page six; 1- 10 dbbdddcadcd 1 1-20 ddddcabcc
Page seven; 1 - 6ABCCDC
Page 8; 1 - 5DDCBA 6are，any 7，where，are 8，do，likes9，what is 10 what，is
Page 9; Chou looked at pozhan's loophole 2, but his heart was still full of beauty, otherwise he wouldn't mistake the moonlight for a handkerchief 3, which shows that the little girl still maintains an optimistic attitude towards her own people 4. She should look at life optimistically.
Page 10; 1- 1 1 dbcbacbbbad
Page 1 1; 1, jujube chases for a winning streak 2, slightly 3-4da5 (1) Because of rain, it can nourish the earth and bring life to everything (2) There is no sound, and obscurity makes people find their way (3) The word "diving into silence" is well used because it shows the selfless dedication of spring rain.
Page 12; 7 - 1 1EGACD
Page 13; AA 3, which means that human beings can associate with their future life, shows that this brand of computer is of great use. (2) The beauty lies in the novel words that can attract buyers in combination with life. (4) Jasper is as innocent as tea. (5) People need to smile, be happy and be tolerant. If an apple represents a smile, I will give you an orchard.
Page 14; We shouldn't take credit for our arrogance and let others fall behind. We must constantly innovate and explore. (2) I will advise Edison not to be proud, but to continue to develop modestly.
Page 15 I have done too much and don't want to send it.
Page 16; 1 - 5ABCCA
Page 17; 1, Qizhan Jiuping 2, number, comparison, classification, title, 3,7612435 4, d
Page 18; 1-5abcdb6-10bcdfe Sima Qian, Sima Guang, Ji Chuanti, chronology, Southern Song Dynasty, Northern Song Dynasty, extensive materials and historical facts.
Page 19; 4 13 4，5624 13 5，BA
Page 20; 6 - 15; CBACDDCAAABC
Page 22; CBBAC ABCD ABCD ABCD AB
Page 23; CDBAA
Page 26; China East Asia Development Bank
Page 27; ABACBCACABCABABC
Page 28; DCAABCADDCB
Page 29; BAACCA 5, Shenli Husen, takes western classics.
Page 30; 11-15 dfega Royal Guards, the emperor explained that Ming Taizu has set up an agency prosecutor, which reflects the characteristics of the Ming dynasty's autocratic rule.
Page 3 1; leave out
Page 32; 6 - 15DBCDCDCADA
Omit on page 34
Page 35; American Broadcasting Company Inc (ABC)
Page 36; A, b, d, x-4 =15 of 2.85-3.
Page 371.x-x-1/3 =12, 2x+3 = 7x-4 = 7/5 [2] 2x-x = 7 [3] (30% x-4 3 5，( 1)X = 0(2)X =- 17(3)X =-26/7(4)=- 1/2
Page 38 1,, solution; Let the hundredth digit of the original three digits be x, 100x+10 (4x-3)+3x+1+270 = (4x-3) times100 to obtain x = 2 2, and the solution; Let the mother be x years old and the female be y years old, and X+2=(Y+2) times 6 (Y+22) times 2=X+22, and X=28 Y=3 3. Let the side length of the original square be x, 3X=4(X-3) X= 12 4. Slightly 5; Solution: Y student with dormitory X requests accommodation, 4X+20=Y (X- 1)8=Y, x = 32y = 36; 15X divided by 3= 12X divided by 2= 1 10.
Page 39 7; Solution, assuming that the original number of days is x days 240+400=280X-200, the solution is X=6 6 times 240+400= 1840 8, Qinghai-Tibet Plateau in Arabian Peninsula 9, Qinghai-Tibet Plateau in Malay Archipelago 10, East Asia and West Asia 1, 70% 6540.
Page 40 CBA 4, x = 6 15, x = 18/ 126, x = 140.
Page 4 1 Page 9. Salt, vitamins, sugar, protein fatty water 10, absorbed and digested by human body1/blue yellow 12, glucose, amino acids and glycerol fatty acids.
13, aspartame 14 omitted 15, no change, no starch, blue, starch, no change, starch digested in saliva does not digest starch.
Page 42; Solution, let ten digits be x10x+n-x+10 (n-x)+c =11N2, okay 3, let the class have x people 2/3x+4 =1/3x.
96-96 times 2/3-4=28 28 times 2/3= 16.
Page 43 1, 6; 4; 3 2，3/2 3，2 1 4，3/8 5，9/7 6，X，Y= - 2/3 7M= 1，N=2 8= - 66 10B= - 7
Page 44; ; BCB 4, rice and wheat are in New Delhi, Mumbai, Kolkata, Pakistan and Bangladesh.
Page 45; 1, 2 2, greater than 77 3, 2 4, X=Y= 1 5, -276, 32x+32y = 4007, -9. Anyone who wants it can come and find it.
Page 46; 1, c, b, c, A 5, artery; Veins with thick wall, high elasticity and fast flow rate; Thin wall, small elastic cavity and small capillaries; The tube wall is extremely thin, the flow rate is the slowest, and the elasticity is small. The lumen 6, the inner diameter of the tube is extremely small, the flow rate is the slowest 7, and the movement and breathing are 8, Y= 1=5/3.
Page 47; X=23/ 15 Y= 13/8
Page 48; Solution, let the decimal be x,10x+x+1= x+x+1x = 00+1=12, the solution, let the gold medal have x blocks 3x+6/5x = 42x = 62. 10 times 6/5= 12.
Copper; 10 times 2-5= 15 3, solution, let the express speed x idle speed y get X=34 Y= 12 4, solution, let Party A and Party B do x every hour, and let part Y get X= 184.
Y=79 5, omitted
The answer on page 49; B，A，D，D，C，A，A，B
Page 50; C, D, A, D, D, 6,67.5 degrees 7, median line 8, greater than 4 9, 10 cm 10, 4,4,3, 12, three, one, one 13,/.
Page 5 1; 16, solution, 4,6,8 obtuse triangle 17, 0 degree less than x less than 180 degree18,75 degree.
Page 52; C, D, B, B, D, A 6, 135 degrees, 120 degrees, 1 15 degrees 7, 36 degrees 8, 30 degrees, 40 degrees 9, grow up when inhaling and contract when exhaling.
Page 53; 1.35 degrees 4.45 degrees
Page 54; B, c, b, c, B 6, 1 8,2 is less than m 9,6 cm10,75 degrees10,20 degrees.
Page 55; 12, 120 degrees 13- Egypt, Egypt 14, Tuzil, Suyinshi 15, high temperature, scarcity, lack of 16, reserves, output, output.
Persia 17, white, Arab, Islam,-Holy City 18, Judaism, Persia, Yin, Christ 19, Middle East,
Page 56 C, B, B, C, B 6, 65-degree isosceles triangle property 7, equilateral, acute angle 8, 10 9, 120 degrees 10 equilateral triangle1,/kloc-0.
40 degrees 12, 30 degrees 13, circle 14, origin, number axis, inverse number 15, take
Page 57; 16, isosceles triangle 2, equilateral triangle 2, square 3, regular pentagon 4, regular hexagon 3 18, Europe, 1957, Economic Union, France.
Italy, Netherlands, Belgium, Fort Lu Sheng, Germany, 12 19, EEC, EV 20, politics, commerce, tourism 2 1, politics, economy.
Page 58; A, b, a, d, c, 7, 9, 40 degrees larger than the center line of No.8.
Page 59; Cornea and pupil, curvature, lens pupil, lens, vitreous body, retina, dark optic nerve, ciliary body, pupil body 1768.
Page 60; A，C，B，B，D，A，C，B
6 1 page; 1,43 2,7 3, 17/3 5 17/3 6,63,66 7,2. 16,2. 16 8, 16, 16,20,2 1 9,35,35
Page 62; 611/23 93% 0.01139500 3,5.5, 1 7/ 12 4, fairness is because 50% of them are the same.
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Thank you, plus 100, O(∩_∩)O Thank you.