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9 tháng 7 2021

\(5^5-5^4+5^3=5^3\left(5^2-5+1\right)=\)

\(=5^3.21⋮7\)

9 tháng 7 2021

Ta có: 55 - 54 + 53

= 53 (52 - 5 + 1)

= 53 . 21

Vì 21 chia hết cho 7 nên 53 . 21 chia hết cho 7

hay 55 - 54 + 53 chia hết cho 7

9 tháng 7 2021

1+1=

ai co nick vioedu ko

cho tớ

Question II. Choose from the four options given (marked A, B, C or D) ONE best answer to complete each sentence by circling the corresponding letter A,B,C or D.Nga …………………. English at the moment.      a. learns             b. to learn             c. are learning              d. is learningHow do you go to school?               - …………….a. on bus                 b. by bus.         c. with...
Đọc tiếp

Question II. Choose from the four options given (marked A, B, C or D) ONE best answer to complete each sentence by circling the corresponding letter A,B,C or D.

  1. Nga …………………. English at the moment.

      a. learns             b. to learn             c. are learning              d. is learning

  1. How do you go to school?               - …………….

a. on bus                 b. by bus.         c. with bus                  d. bus            

  1. My birthday is ……….the ……..of November.

a. on ………thirty     b. at ……..thirtieth        c. in ……..thirty      d. on ……thirtieth

  1. What is the longest month of the years? (number of letters)

a. September         b. December            c. November     d. January   

  1. My sister usually …………………to the movie theater.

a. go                b. to go                    c. goes                d. going

     11. ………….a beautiful holiday!

            A. It                 B. What           C. How              D. Which

      12. How are you getting on at school, Mai? - ……………………..

           A. That’s all right      B. You are welcome      C. Very well, thanks.      D. Not at all

     13. I am very glad to see you again after a long summer holiday.

             A. I do, too.            B. So am I                  C. Neither am I                  D. so do I

     14. My father takes care ……………sick children.

             A. of                  B. on                      C. about                  D. with

    15. – Is Singapore rather crowded?

      - No, there are ………….people than in Hongkong.

                A. more                  B. a lot              C. less              D. fewer

    16. Is it  not easy to learn English well ? - ……………..

A. No, it is.          B. No, it isn’t .            C. Yes, it isn’t            D. Yes, it does.

    17. He writes articles for a newspaper. He is …………………….

A. a journalist                 B. a teacher                     C. a musician                   D. farmer

     18. Red is my…………………color.

A. interesting                 B. beautiful                C. favorite               D. main

     19. Students have two……………..each day.

           A. 20-minutes breaks   B. 20-minute break   C. 20-minute breakes    D. 20-minute breaks   

     20. I usually go to school ………..bike, but today I am going to school ………foot.

           A. by/by                   B. by/on                 C. on/by            D. on/on

21. There are 365 days in a …………….year .

A. single                      B. late                          C. new                         D. leap

22. ……………she……………..blind man’s bluff at the moment ?

      A. Is – play                  B. Does – play             C. Is – playing             D. Do – play

23. Would you like……………..dinner with my family ?

      A. have                        B. has                          C. having                     D. to have

24. They go and see their grandparents……………….a year.

      A. two                         B. any times                C. twice                       D. one

25. It’ll……………..me a few more minutes to finish my homework.

      A. take                        B. give                         C. spend                      D. get

26. The weather today is much ……………. than yesterday.

A. good                       B. best                         C. better                      D. gooder

27 . Mai is very ……………….. in computer. Computer science is her favorite class.

A. interest                   B. interesting               C. interested                D. interestedly

28. Look ................... that strange man. He is looking ..............Lan but she isn’t here.

A. for/ at                     B. at/for                       C. at/at            D. at/ on

29. I couldn’t find your telephone number........................

            A. guide                      B. brochure                 C. catalogue                D. directory

30. The ...................popular after school activities in our city are football, tennis and swimming.

            A. more                       B. less                          C. most                        D. lest

31. Hoa................a cushion for her armchair three days ago.

            A. make                       B. makes                     C. made                       D. will make

32. Some young people work......................hospital volunteers.

            A. as                            B. too                          C. so                            D. same

33. Hoa tried………..the new dress but it didn’t fit

A.              out                   B. at                             C. about                       D. on

34. Students learn about prepositions, verbs and words in……………class.

A. Literature               B. English                   C. History                   D. Geography

35……………..do you go to school? – Six days a week.

A. How many              B. How much              C. How often              D. How long

36. What……………..naughty boy!

A. a                                   B. an                            C. is                             D. are

4
8 tháng 7 2021

Bắt đầu từ chữ"Nga" là 6 nhé

6. D

7. B

8. D

9. A

10. C

11. B

12. C

13. B

14. A

15. D

16. B

17. A

18. C

19. D

20. B

21. A

22. C

23. B

24. D

25. C

26. D

27. C

28. A

29. B

30. B

31. C

32. B

33. D

34. A

35. C

36. B


 

I. Choose the word in each group that has the underlined part pronounced differently from that of the rest.1. A. watched                         B. looked                       C. fitted                                  D. stopped2. A. sure                                 B. saw                         C. send                       ...
Đọc tiếp

I. Choose the word in each group that has the underlined part pronounced differently from that of the rest.

1. A. watched                         B. looked                       C. fitted                                  D. stopped

2. A. sure                                 B. saw                         C. send                                    D. sit

3. A. please                             B. real                         C. overseas                            D. ahead

4. A. new                                 B. sew                         C. few                                    D. knew

5. A. tool                                 B. coop                                    C. took                        D. food

6.A. talked                              B. visited                                 C. rented                     D. fitted

7.A. help                                    B. friend                               C. send                        D. fewer

8.A. stamp                                B. sew                                   C. opposite                   D. bookstore

9.A. milk                                  B. library                                C. dinner                     D. polish

10.A. pork                                 B. go                                     C. hold                        D. cold

3
8 tháng 7 2021

I. Choose the word in each group that has the underlined part pronounced differently from that of the rest.

1. A. watched                         B. looked                       C. fitted                                  D. stopped

2. A. sure                                 B. saw                         C. send                                    D. sit

3. A. please                             B. real                         C. overseas                            D. ahead

4. A. new                                 B. sew                         C. few                                    D. knew

5. A. tool                                 B. coop                                    C. took                        D. food

6.A. talked                              B. visited                                 C. rented                     D. fitted

7.A. help                                    B. friend                               C. send                        D. fewer

8.A. stamp                                B. sew                                   C. opposite                   D. bookstore

9.A. milk                                  B. library                                C. dinner                     D. polish

10.A. pork                                 B. go                                     C. hold                        D. cold

1.C

2.A

3.D

4.B

5.C

6.A

7.D

8.C

9.B

10.A

8 tháng 7 2021

My father think mountain climbing (be)...is...more  dangerous than skating

every year, my mother (give)...gives... me a nice doll on my birthday

my borther (not )..doesn't ... collecting stamps, he collecting glassw bottles

my sister (cook)...cooking... very much .she can cook many good foods

....Do you think.....(you/think) collecting stampscosts much money

8 tháng 7 2021

Trả lời :

My father think mountain climbing (be)...is...more  dangerous than skating

every year, my mother (give)...gives... me a nice doll on my birthday

my borther (not )..doesn't ... collecting stamps, he collecting glassw bottles

my sister (cook)...cooking... very much .she can cook many good foods

....Do you think.....(you/think) collecting stampscosts much money

8 tháng 7 2021

Trả lời :

I (swim)... there is a pool near my house, so I go there fours time a week to (swim)......

=> I (swim).swimming.. there is a pool near my house, so I go there fours time a week to (swim)..swim....

8 tháng 7 2021

Trả lời :

I (swim)... there is a pool near my house, so I go there fours time a week to (swim)......

=> I (swim).swimming.. there is a pool near my house, so I go there fours time a week to (swim)..swim....

~~Học tốt~~

8 tháng 7 2021

Trả lời :

I think they (move)...... to our hometown

=> I think they (move)...are moving... to our hometown

8 tháng 7 2021

Trả lời :

I think they (move)...... to our hometown

=> I think they (move)...are moving... to our hometown

8 tháng 7 2021

Trả lời :

We (go)....to the cinema twice a month.We all love (watch).. the latest fims

=> we (go).....go.....to the cinema twice a month.We all love (watch) ........watching......... the latest fims

8 tháng 7 2021

we go to the cinema twice a month. We all love watching the latest fims.