a.children b.teacher c.christmas d.match
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TD
1
28 tháng 1 2023
Ta có 3x( y + 1 ) + y + 1 = 7
3x( y + 1 ) + ( y + 1 ) = 7
( 3x + 1 )( y + 1 ) = 7
Vì x; y nguyên nên 3x + 1 và y + 1 nguyên
Vậy ( 3x + 1 ); ( y + 1 ) ϵ Ư( 7 ) = { 1; -1; 7; -7 }
Lập bảng giá trị
| 3x + 1 | 1 | -1 | -7 | 7 |
| y + 1 | 7 | -7 | -1 | 1 |
| x | 0 | \(\dfrac{-2}{3}\) ( loại ) | \(\dfrac{-8}{3}\) | 2 |
| y | 6 | 0 |
Vậy các cặp số nguyên ( x; y ) cần tìm để 3x( y + 1 ) + y + 1 = 7 là ( 0; 6 ); ( 2; 0 )
27 tháng 1 2023
Did you go to the zoo last week, Phong?
What did the peacocks do when you were there?
She saw two pandas at the zoo
What are your favourite animals at the zoo?
The python moved really slowly and quietly
The pandas were really cute and did things slowly
The gorillas was moved quickly when Nam at the zoo
Hung and i saw a lot of animals at the circus
The tigers were fast because they liked Mai
The monkeys jumped down and up very quickly
NC
27 tháng 1 2023
1. Did you go to the zoo last week, Phong?
2. What did the peacocks do when you were there?
3. She saw two pandas at the zoo.
4. What are your favourite animals at the zoo?
5. The python moved really slowly and quietly.
6. The pandas were really cute and did things slowly.
7.
The gorillas was quick moved when Nam at the zoo.
2. I and Hung saw a lot of animals in the circus.
3. Mai liked tiger because they were fast.
4.The mokeys jumped up and very quiickly
HT
ht
27 tháng 1 2023
Firstly, I saw the tigers
I can see a python. It's moving quietly in the garden.
PT
3
S
27 tháng 1 2023
what did you...........at the zoo ?
a.see b.saw c.seeing d.to see
..........when you were there ?
a.what did the tiger did c.what did the tiger to do b.what did the tiger doing d.what did the tigers do
the monkeys moved very........from tree to tree
a.quick b.more quick c.quickly d.quicks
next, we saw the tigers and monkeys. ............,we saw the pandas before going home
a.first b.in the end c.then d.next
..........? - It was bears
a.what did you see at the zoo ?
b.what did you do at home ?
c.what did you do at school ?
d.what are you doing ?
the gorillas moved.........when nam was at the zoo
a.slow b.loudly c.quick d.quickly
..... ? - It was great
a.what was it b.what was it like
c.what were they like d.what is it like
..........did you go to the zoo ? - I went there yesterday
a.what b.how c.how often d.when
A,B,D âm /tʃ/ còn C âm /k/
=>C
=>C