My motherland in my heart

My motherland in my heart

How to write the composition of unit 2 in Volume 1 of grade 6? Around the theme of "motherland in my heart", write a speech

Dear teachers, dear students: Hello everyone! The topic of my speech today is "the motherland is in my heart". Five thousand years of long journey, all the way wind and rain. The Chinese nation once had the glory of opening to the world, strong national strength of the Han and Tang Dynasties, but also had the humiliation of being closed to the outside world, backward and beaten. The road ahead is full of hardships, but it is full of hardships

Lne = how much

1

122 W, 38 n

West longitude 122 degrees north latitude 38 degrees in San Francisco, San Francisco

Which is a natural number, 0 or 19
also
Is 49 prime

Are 0 and 19 natural numbers
49 is not prime, 7 times 7 = 49

If the equation x ^ 2 + (a-11) x + a-5 = 0 of X has two integer roots, then the value of the real number a

x1+x2=11-a
x1x2=a-5
The equation x ^ 2 + (a-11) x + a-5 = 0 of X has two positive integer roots
Then 11-A > = 0 and a-5 > = 0 are also changed to positive integers
The solution is 5

6:1 and 4 / 5 simplest integer ratio, ratio

6:1 and 4 / 5 simplest integer ratio, ratio
=3.6:1.8
=2:1；
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(- 1) + 2 + (- 3) + (- 4). + (- 99) + 100 is equal to

（-1）+2+（-3）+4+（-5）+6+（-7）+8+（-9）+10+.+（-99）+100
=[（-1）+2]+[（-3）+4]+[（-5）+6]+[（-7）+8]+[（-9）+10]+.+[（-99）+100]
=(2-1)+(4-3)+(6-5)+(8-7)+(10-9)+.+(100-99)
=1+1+1+1+1+.+1
=1*50
=50

A = LG (1 + 1 / 7) B = LG (1 + 1 / 49) denote LG2 and lg7 with a and B

a＝lg（1+1/7）＝lg（8/7）＝lg8－lg7＝3lg2－lg7
b＝lg（1+1/49）＝lg（50/49）＝lg50－lg49＝lg5＋lg10－2lg7＝1＋lg5－2lg7
∴2a－b＝6lg2－1－2lg5＝8lg2－1－2（lg5＋lg2）＝8lg2－1－2lg10＝8lg2－1－2＝8lg2－3
∴lg2＝（2a－b＋3）/8
∴lg7＝[3（2a－b＋3）/8]－a＝9/8－3/8b－a/4

Fill in the appropriate symbol between 15 nines to make it equal to 2000
1 + 2 * 3 + 4 * 5 + 6 * 7 + 8 * 9 = 4455 in brackets

Because the system prompted that there was something unsuitable for publishing, so I made a picture,
See the figure below