a/yeu to quoc yeu dong bao gom 19

de biet duoc chu cai so 2104 thi phai viet chu "YEUTOQUOCYEUDONGBAO"so lan

2014 : 19=106 lan 

vi 2014 chia dc cho 9 nen chu cuoi cung trong yeu to quoc yeu dong bao la chu cai so 2014

vay do la chu O

dap so a/ chu O

Vì \(\frac{x}{4}=\frac{2}{y}\Rightarrow x.y=4.2\)

Mà 4.2=8 => x.y = 8

=> y=1 thì x=8(ngược lại) 

y=2 thì x=4(ngược lại)

y=-1 thì x=-8(ngược lại) 

y=-2 thì x=-4(ngược lại)

Vậy có 8 cặp x,y.

Dùng từ gợi ý để đặt câu:

1) i/ not/ go/ her/ birthday party/last week.

=> I didn't go to her birthday party last week

2)the girl/not like /play soccer.

=> The girl doesn't like playing soccer .

3)mary/often/travel/work/car.

=> Mary often travels to work by car .

4)meat/vegetables/good/our health

=> Meat and vegetables are good for our health .

Tìm ra lỗi sai và sửa chữ nó ở mỗi câu sau?

1 . My mother is a accountant

a => an

2.There are a lot of new on TV

are => is

3.Nam and I am classmates

am => are

4. Are there many rice in the kitchen?

many => any

5.I don't have many pencil 

many => any

6. How much students are there is your class

much => many

7. Hoa have got two dogs

have => has

8. My father don't work in this factory

don't => doesn't

.Dùng từ gợi ý viết thành câu hoàn chỉnh.

1. The students/ offer/ flowers/ the visitors/.

=> The students offered flowers to the visiter

a/(where it is)

It's next to the chemistry room.

b/(what time it opens and what time it closes)

It opens at 8 o'clock and closes at 5 p.m.

c/(about how many books it has)

It has about 5000 books.

d/(what kinds of books it has)

There are a lot kind of books

e/(how many shelves it has)

There are 20 shelves.

f/(how many people work there)

There are two people work there

TP High is the easiest library in town. Here, all students can experiencing with the modern equipment. The library opens Monday to Firday, from 8 am to 7.30 pm. It stocls a wide range of materials (a.g. books, fictions, video tapes, cassettes, etc) and has a full time librarian who can help students with their assign and resesrch work if they need it. The library has three sections. The first one is the reader section on the left of the entry. On the right is the multimedia zone which is larger than the reading room. The biggest section is the book zonr, where are tens of shelves to stock hundreds of printed materials on various subjects.

There was a time when photos were only taken by regular point-and-shoot-cameras, but now everything has changed. With the help of mobile phones and computers, people are taking billions of photos everyday from all parts of the world. I, myself, take so many pictures that I sometimes forget which photograph I took and when I took it. There is this one photograph I like the most. It’s just beautiful…

1. be => was / were

2. find => found 

3. use => used

4. fall => fell

5. light => lit / lighted

6. escape  =>  escaped

 7. make => made

8. graze => grazed

9 , fit => fitted

10. lose=> lost

11. go  => went

12. choose=> chose

13. appear => appeared

14. come => came

15. hold => held

16. break  => broke

gọi số cần tìm là abc (a>0; a,b,c < 10)

số mới là 90abc. theo bài ra ta có:

90abc : abc = 721

( 90000 + abc) : abc = 721

90000 : abc + abc : abc = 721

90000 : abc = 721 - 1 = 720 

abc = 90000 : 720 = 125

vậy số đó là 125

nếu thấy hợp lí thì cho mình **** nhé