ko ghi đc đáp án sao lm bài :D
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1 tháng 4 2021
ĐỀ LUYỆN THI IOE LỚP 5
1. house / is / the city. / in / My
...............................................................................
2. Peter / go / on foot? / Does / to work
................................................................................
3. _ESULT
4. My mother gave me a _ _ _ _ _ _ _ yesterday.
5. We have English on Tuesday and Saturday. We have it ... a week.
A. once B. twice
C. two times D. three times
6. Go straight and Mai's house is ... your right.
A. at B. in
C. beside D. on
7. a shower / You should / take / twice / a week.
....................................................................................
8. an / orange. / is / That
..................................................
9. My father sometimes plays _ _ _ _ _ _ with his friends.
10. Remember to drink water everyday. It's good _ _ _ our health.
11. Choose the odd one:
A. sing B. play
C. draw D. yesterday
12. Make ... circles.
A. four B. a
C. for D. one
13. is / chicken. / favorite / My / food
.................................................................................
14. frogs / some / garden. / There are / in the
..................................................................................
15. I want to be a musician in _ _ _ future.
16. All of my friends watching cartoons _ _ TV.
17. She s going ... in the fall.
A. fish B. fishing
C. fishes D. to fish
18. Where is my cup of tea? – It's ... the kitchen.
A. in front of B. under
C. behind D. in
19. interesting / doing / We are / things. / many
...............................................................................
20. to school / I / usually / go / by bike.
................................................................................
21. Happy birthday to y_ _!
22. What subject are you good _ _ , Elisa?
23. I have ... on Monday. I the subject very much.
A. biology B. novel
C. education D. science
24. Choose the word that has the underlined part pronounced differently:
A. hour B. house
C. hen D. hot
25. to learn / many interesting things / I / about animals. / love
......................................................................................
26. usually / play / Trinh and Thang / table tennis / together.
.........................................................................................
27. We are having _ break now.
28. There are many cows in the _ _ _ _ _ _ _ of my family.
29. Hoa was very surprised when she looked at ... in the mirror.
A. she B. hers
C. herself D. her
30. Choose the word that has the underlined part pronounced differently from the others:
A. season B. weather
C. week D. beach
31. activities in / a lot of / interesting / There are / the festival.
.....................................................................................
32. has / and / a son. / a daughter / Mrs Hanh
.......................................................................................
33. Don't forget to post the letter _ _ _ me.
34. After dinner, my mother checks my homework b_ _ _ _ _ bedtime.
35. I ... born on November 17th.
A. was B. were
C. am D. is
DD
13 tháng 3 2017
\(\text{Phải là tổng của 2 số nguyện tố có bằng 2003 dc k chứ?}\)
\(\text{Gọi a+b=2003(a và b là 2 SNT)}\)
\(\text{Giả sử nếu a=2 thì b=2003-2=2001(2001 là hợp số)}\Rightarrow loại\)
\(\text{Nếu a=3 thì b=2003-3=2000 (hợp số nên loại)}\)
\(\Rightarrow\)\(\text{a+b chẵn vì lẻ+lẻ=chẵn}\)
\(\text{Mà 2003 lẻ nên k tồn tại 2 SNT}\)
