Answers to page 13, 14 and 15 of the English exercise book If you have an answer, you'd better send as much as you can Unit 2 Part B

Answers to page 13, 14 and 15 of the English exercise book If you have an answer, you'd better send as much as you can Unit 2 Part B

4、 1, C 2, a 3, F 4, b 5, D 6, e. V, do, does, am, on, look, is. VI, 1, E 2, C 3, D 4, b 5, A. VII, 1, C 2, B 3, C 4, a 5, a

Answers to page 1, 2 and 3 of PEP sixth grade volume II English exercise book

Sorry, I am a junior high school student, if you give me the question, I will help you to solve it, but next time, I will help you!

Simplification ratio: 0.04:0.5 1.2:1.25 0.07:4.2 5:37.5% 0.4:75%

0.04:0.5=4：50=0.08 1.2:1.25=120:125=24:25=0.96 3/5:2/5=3:2=1.5
0.07:4.2 = 7:420 = 1 / 60 5:37.5 ﹪ = 5 / 8:3 / 8 = 5 / 3 0.4:75% = 40:75 = 8 / 15

If {an} is an arithmetic sequence, A1 > 0, a2006 + a2007 > 0, what is the maximum natural number n of a2006a20070

A2006a20070

A classroom area is 87, 04 square meters, with the side length of 0, 8 meters of square tile floor, at least how many pieces?

0.8 * 0.8 = 0.64 (M2) 87.04/0.64 = 136 (pieces)

Traditional festivals of 56 nationalities in China

Major festivals of ethnic minorities in China
Time of major national festivals time of major national festivals
Achang Nationality
Torch Festival on June 25 of the lunar calendar
The water splashing Festival falls on April 15 of the lunar calendar
Dongxiang People in Huijie Festival
The twelfth day of the third month of the Islamic calendar
Water splashing Festival February 29 of the lunar calendar Eid al Fitr September 30 of the Islamic calendar
The first day of July in the sashen lunar calendar
On the 15th of the eighth month of the lunar calendar
Lulong Festival from June to September of the lunar calendar
Bai nationality
March 15 of the lunar calendar
Torch Festival June 24 of the lunar calendar bullfight Festival February of the lunar calendar
Yutan Festival on the 15th of the eighth month of the lunar calendar
Baoan clan
The Dulong nationality on the 12th of the third month of the Islamic calendar
Katrina in the middle and late October of the lunar calendar
Eid al Fitr Islamic calendar September 30 Russian
Easter calendar in March and April
The Oroqen people on December 10 of the Islamic calendar
The first day of the first lunar month
Bulang Nationality
Ewenki on December 15 of the Dai calendar
Mikoulu Festival May 22, lunar calendar
The Gaoshan people on the 15th of September in the Dai calendar
Lunar New Year Festival
The Gelao people on February 19 of the lunar calendar
The first day of the first month of the lunar calendar
Buyei
The sixth day of the sixth month of the sixth lunar month Gelao festival the third day of the third lunar month
The third day of the third lunar month
The Lahu people on the eighth day of the fourth month of the lunar calendar
Kuzha Festival, Dai calendar, March
the Korean nationality
The first day of the first month of the first lunar month Torch Festival
Shangyuan Festival on the fifth day of the first month of the lunar calendar
Li nationality on the fifth day of the fourth lunar month
The third day of the third month of the third lunar month
On the fifth day of the fifth month of the Dragon Boat Festival
Harvest festival September of the lunar calendar
Hani Nationality
October festival the first day of October of the lunar calendar Bath Pond festival the third day of the first month of the lunar calendar
June Festival Lunar New Year's day on June 24 Lunar New Year's Day Lunar New Year's Day
Kazak nationality
Holy Ji Festival on March 12 of the Islamic calendar knife pole Festival on February 8 of the lunar calendar
The Luoba people on the 30th of the ninth month of the Islamic calendar
Xudulong festival in February of Tibetan calendar
Gurbanjie Islamic calendar December 10 Lund Festival Tibetan calendar April
Hezhe Nationality
Manchu on the first day of the first lunar month in hezhenian
November 13 of the lunar calendar
Hui nationality
Holy season, March 12 of the Islamic calendar, temple fair, April of the lunar calendar
The Jingpo nationality on the 30th of the ninth month of the Islamic calendar
The 15th day of the first month of the lunar calendar
Kirgiz people on December 10 of the Islamic calendar
The twelfth day of the third month of the Islamic calendar
Jinuo Nationality
The first month of the lunar calendar, Eid al Fitr, September 30 of the Islamic calendar
Torch Festival lunar June gurbanjie Islamic calendar December 10
Jing Nationality
The 10th day of the sixth month of the Hajie lunar calendar
A collection of traditional festivals of ethnic brothers
Mongolian
Mongolian traditional festivals mainly include the old Chinese new year, which is called "Chagan Saren" in Mongolian, that is, the white moon. Mongolian New Year Festival is also called "white Festival" or "white moon", which is closely related to the whiteness of milk. In addition, there are Nadam and mare's milk Festival
the Korean nationality
Its festivals are basically the same as those of the Han nationality, mainly including spring festival, Qingming Festival, Dragon Boat Festival, Mid Autumn Festival, old people's day and so on. There are also three family festivals, namely, baby's first birthday, Huijia Festival (60th birthday) and Huijia Festival (60th anniversary of marriage). On Huijia Festival and Huijia Festival, children, relatives, friends and neighbors all bless and celebrate the old people's birthday
Dai nationality
Dai's major festivals are water splashing Festival, gate closing Festival and gate opening Festival, all related to Buddhism
Dongxiang Nationality
Like other religious people, Dongxiang People have three major festivals every year, namely, Eid al Fitr, gurbanjie and holy Ji Festival, all of which come from Islam
Hounan Festival is a grand new year festival of Bulang Nationality. It is held every 7 days after Qingming Festival in March of the lunar calendar, that is, from April 13 to 15 of the Gregorian calendar. In the festival, the main activity is to pour water on each other, and the ceremony is completely in accordance with the traditional way of Bulang Nationality, the custom of welcoming the sun. Therefore, people call it the festival of welcoming the sun
Nu nationality
The main festivals are: Spring Festival, which is called "jijiamu" in angry language, also known as Jisi Festival; fairy Festival, also known as flower festival, is a traditional festival of Nu people living in Gongshan area, and the festival period is from March 15 to 17 of the lunar calendar; ceremonial God, which is called "Ruwei" in angry language, is a traditional festival of Nu people living in Pihe area of Bijiang County, which is on December 29 of the lunar calendar, Pray for the grain God
The Tatar language of the Tatar nationality is called "gurbangaiti", which is a transliteration loanword of Arabic. The Arabic "karbang" means "sacrifice". Gurbangjie is 70 days after "Rouzi Festival" on December 10 of the Islamic calendar. There are three major festivals, namely, gurbangjie, Eid al Fitr and holy Ji Festival
Hui nationality
There are three major festivals of the Hui people, namely, Eid al Fitr, qurbang Festival and holy Ji Festival. These three festivals are all religious festivals. Eid al Fitr is the free translation of "ERD · fisser" in Arabic, so it is also called "ERD" festival. In Xinjiang, there is also the name of "Rouzi" festival. Qurbang Festival, the 70th day after Eid al Fitr, that is, December 10 of the Islamic calendar, is the festival of qurbang, It is the last day for Muslims to go to Mecca (Mecca: the holy land of Islam) for pilgrimage. On this day, they have to bathe and clean themselves, burn incense indoors and fast for half a day. In the morning, people go to the mosque to attend the ceremony, kowtow to Mecca, ask the Imam to slaughter the animals, and give part of the slaughtered cattle and mutton to relatives and friends, and give alms to the poor, This day is the 12th day of the Islamic calendar, which is also the day of Muhammad's death. Commemorative activities are generally held in mosques. In the activities, we need to recite scriptures and talk about holy deeds. In some places, we also hold a grand ermeri meeting (charity banquet) on this day to entertain guests
Manchu
Influenced by the Han culture, Manchu people pay close attention to the lunar new year. On the 15th of the first month, there is the Lantern Festival, and on the 25th of the first month, there is the tiancang Festival. On the 2nd of February, there is the Dragon locking day, and on the 5th of may and the 6th of June, there is the insect King's day, and on the 15th of August, there is the Mid Autumn Festival. On the 25th of the first month, every year, Manchu rural family pays attention to cooking sticky sorghum rice and putting it in the warehouse, On the first day, new rice is added three times in a row. Some people use sorghum straw to make two hoes and put them on the rice. This festival is still preserved in the northeast rural areas. On the king of insects day, June, it is easy to cause insect disasters. Manchu people living in Xiuyan and Fengcheng of Liaoning Province used to make two hoes on the sixth day of June, One person from each family goes to the insect king temple to worship, kill pigs and offer sacrifices. They ask the insect king to avoid disaster and ensure a good harvest in the field. Nowadays, there is no sacrifice and sweeping activities on the insect King's day, but every family has to dry their clothes on this day to prevent insects
Li Nationality
Li's festivals are closely related to Li's calendar. Before liberation, most of Li's festivals used the lunar calendar in neighboring Han areas and Li Han mixed areas. The festivals are the same as those of Han people, such as Spring Festival, Qingming Festival, Dragon Boat Festival and so on. For Li, the most grand and popular festivals are Spring Festival and March 3
Naxi minority
Many festivals of Naxi people are the same as those of Han people, such as Spring Festival, Qingming Festival, Dragon Boat Festival, Mid Autumn Festival and so on. However, the activities of Spring Festival are different from those of Han people, with strong national characteristics. Like many nationalities in Southwest China, Naxi people also have Torch Festival. The traditional festivals of Naxi people are mainly mule and Horse Festival, farm tools Festival, Dragon King Festival and Chaoshan Festival
Salars
Salars mainly have the Eid al AdhA, Eid al Fitr and the holy season
Uzbek nationality
Uzbek mainly have Eid, gurbanjie, nuoluzi
Dulong nationality
There is only one traditional festival of the Dulong nationality. People call it "kaquewa" or "deriwa", which means new year's day. The time is in the lunar month. The specific time is decided by each family or family. The length of time depends on the food preparation. During the festival, people hold ceremonies to sacrifice mountain gods, sing and dance
the zang or tibetan people
There are many festivals in Tibet, almost every month there is a festival, Among the traditional festivals, Tibetan new year, Bathing Festival, sheaton Festival and wangguo Festival are the most large-scale and characteristic. In addition, there are Dama Festival, flower appreciation Festival, Shangjiu Festival, langzareja Festival, Russian Festival, luorang Zha Flower Festival, Bathing Festival, exorcism Festival, xianglang Festival, butter Lantern Festival, wangguo Festival, Zhuanshan Festival and so on
Dong Nationality
Most Dong people celebrate the Spring Festival on the first day of the first month. In some places, the year of Dong is celebrated on the end of October or the beginning of November, Take Sanjiang Dong Autonomous County as an example, it is the third day of the first month (lunar calendar, the same below), Meilin is the second day of February, Fulu is the third day of March, and Linxi is October 26, When the hoop falls down, people take the hoop as the target and rush to fight for it, which is called "snatching fireworks". It is said that whoever grabs the fireworks will be able to prosper in this year, The gathering place also sings Dong opera, performs the color tune, blows Lusheng, "duoye", plays basketball and so on. The fireworks festival is the most lively festival of the Dong people
Lisu
The main festivals of the Susu people are bath and pond Festival, harvest festival and Chinese New Year Festival. The traditional knife pole Festival is held on the eighth day of the second lunar month every year. In the center of the festival venue, two 20 meter thick long poles are erected, which are tied with 36 important activities like a ladder. The dates of the "singing ha Festival" vary from place to place, Hongkan is on the 15th day of the first month. The "Ha singing Festival" is held in hating. There are "Ha Ting" built in various places. The "Ha Ting" in each village is made of superior wood and has a unique ethnic form

Given Tan α = 2, find the value of 1 + sin α cos α / sin square α + 1

tanα=2 sinα/cosα=2 sinα=2cosαsin²α+cos²α=1(2cosα)²+cos²α=15cos²α=1cos²α=1/5 (1+sinαcosα)/(sin²α+1)=(1+2cos²α)/(1-cos²α+1)=(1+2cos²...

The two areas are equal