K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

27 tháng 4 2022

d

30 tháng 11 2015

B 100% lA DUG boi vi cai nay co cog thuc doc rieg cua no

Name……………..                             ĐỀ NÂNG CAO SỐ 4I. Choose the word which has the underlined part pronounced differently from the others1. A. stopped                           B. washed                               C. studied                    D. looked2. A. machine                          B. armchair                              C. children                   D. watch3. A. classes                            B. lakes                                   C. cages                     ...
Đọc tiếp

Name……………..                             ĐỀ NÂNG CAO SỐ 4

I. Choose the word which has the underlined part pronounced differently from the others

1. A. stopped                           B. washed                               C. studied                    D. looked

2. A. machine                          B. armchair                              C. children                   D. watch

3. A. classes                            B. lakes                                   C. cages                      D. houses

II. Choose the word whose stress pattern is different from that of the others

4. A. mother                            B. relax                                   C. father                       D. garden

5. A. decide                             B. combine                              C. apply                       D. happen

III. Choose the word or phrase that best completes the sentence

6. “Would you like to go to the concert?” - ……………., I have a lot of homework to do”

            A. All right, let me see             B. I’d love to, but I can’t

            C. No, not at all                                   D. I don’t think so

7. “May I borrow your newspaper?” – “………………..”

            A. That’s a good idea                          B. It doesn’t matter

            C. Sure. Here you are                         D. It is my pleasure

8. You shouldn’t spend too ………………time playing computer games

            A. much                       B. few                          C. many                       D. little

9. “……………..will clean the classroom tomorrow?” –“Peter and Mike”

            A. What                       B. Who                        C. When                      D. Why

10. “……………..is it from here to school?” – “About two kilometers”

            A. How far                   B. How high                 C. How long                D. How often

11. Minh ……………..television last night

            A. watches                  B. watchs                    C. watching                 D. watched

12. She works hard from morning ……………….night

            A. in                             B. at                             C. till                            D. before

13. Liz is ………………..than her sister

            A. beautifulest             B. more beautiful         C. beautifulier              D. most beautiful

14. ………………late!

            A.  Not                         B. Don’t be                  C. Aren’t                      D. Not be

15. “Would you like some coffee?”- “………………..”

            A. Yes, please             B. Of course                C. No, thanks              D. Both A and C are correct

IV. Put the verbs in the blanks into suitbale tenses/ forms

16. I am used to (get)……….. up early

17. Would you mind (open)………….. the door?

18. After (come) …………….home, Tom  reads the morning newspaper

19. He’d rather (stay)…………….. at home than go out

20. I look forward to (see)………………….. your reply

V. Choose the underlined part that needs correcting

0
Combinatorics21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?Different way: Cách khác nhau.22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form...
Đọc tiếp

Combinatorics
21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?
Different way: Cách khác nhau.
22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?
At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.
23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form 3-digit numbers. How many even number(s) greater than 300 is / are there? (The repetition of digits is not allowed)
Digit: Chữ số; 3-digit number: Số có 3 chữ số; Even number: Số chẵn; Greater than: Lớn hơn; Repetition of digits is not allowed: Các chữ số không được lặp lại.
24. A flight of stairs has 10 steps. Peter can go up for 1 step, 2 steps or 3 steps each time. How many way(s) is / are there for Peter to go up the stairs?
Step: Bước; Way: Cách.
25. Numbers are drawn from 80 integers 20 to 99. At least how many number(s) is / are drawn at random to ensure that there are two numbers whose sum is 85?
Integer: Số nguyên; At least: Ít nhất; Random: Ngẫu nhiên; Ensure: Chắc chắn; Sum: Tổng.
~ End of Paper ~
  

6
13 tháng 4 2022

là seo pạn?mik hem hỉu??????????????????????

13 tháng 4 2022

Đọc cái bài mà mún trầm kẻm!

Combinatorics21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?Different way: Cách khác nhau.22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form...
Đọc tiếp

Combinatorics
21. 15 students join a competition. Only top 5 students can be promoted to next round. How many different way(s) of promotion advance is / are there?
Different way: Cách khác nhau.

22. It is known that there are 8 classes of grade 5 in a primary school. At least how many students are there in grade 5 to ensure there exist 41 students in the same class?
At least: Ít nhất; Ensure: Chắc chắn; Exist: Tồn tại.

23. Choose 3 digits from 1, 2, 3, 4, 6, 8 and 0 to form 3-digit numbers. How many even number(s) greater than 300 is / are there? (The repetition of digits is not allowed)
Digit: Chữ số; 3-digit number: Số có 3 chữ số; Even number: Số chẵn; Greater than: Lớn hơn; Repetition of digits is not allowed: Các chữ số không được lặp lại.

24. A flight of stairs has 10 steps. Peter can go up for 1 step, 2 steps or 3 steps each time. How many way(s) is / are there for Peter to go up the stairs?
Step: Bước; Way: Cách.

25. Numbers are drawn from 80 integers 20 to 99. At least how many number(s) is / are drawn at random to ensure that there are two numbers whose sum is 85?
Integer: Số nguyên; At least: Ít nhất; Random: Ngẫu nhiên; Ensure: Chắc chắn; Sum: Tổng.
~ End of Paper ~

1
13 tháng 4 2022

chịu thoi khs quá

11 tháng 6 2016

Khi John lấy 5 quả bóng, kết quả có thể là 3 xanh và 2 đen. Chưa được 4 quả cùng màu.

Trong 3 loại đỏ, trắng, vàng còn lại, John phải lấy thêm ít nhất 10 quả nữa để chắc chắn có 4 quả cùng màu vì: 10 chia 3 bằng 3 dư 1. 4 quả ấy bao gồm 3 quả là Thương cộng 1 quả là Dư.

Vậy John phải lấy ít nhất 15 quả bóng để chắc chắn có 4 quả cùng màu.