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31 tháng 1 2019

1. We stayed home because the weather was cold

2. Because most people ..., they begin to jog.

3. People ... country because the climate is healthy.

4. Because a ... purposes, it becomes ...

5. Because she was ill, Stacy...

6. We were ... meeting because the traffic was heavy.

7. Harry ... hospital because his leg was broken.

8. Because our ... meeting, it was cancelled.

Join each pair of sentences. Use the words in brackets1.Mary came to class late. he motorbike had a puncture. (because)2. Nicks used to smoke. he seems to be in good heath. (although)3. our team won by a large margin. no one thought we would win the championship.(but)4 I could not see his face clearly. he was standing in the shadow. (so)5.We couldn't get tickets. we queued for an hour. (in spite of)6.the man spoke very slowly. he wanted me to understand wh he said. (so that)7 she earned her...
Đọc tiếp

Join each pair of sentences. Use the words in brackets

1.Mary came to class late. he motorbike had a puncture. (because)

2. Nicks used to smoke. he seems to be in good heath. (although)

3. our team won by a large margin. no one thought we would win the championship.(but)

4 I could not see his face clearly. he was standing in the shadow. (so)

5.We couldn't get tickets. we queued for an hour. (in spite of)

6.the man spoke very slowly. he wanted me to understand wh he said. (so that)

7 she earned her living by selling newspaper. she got a B.A. degree. (even though)

8. our flight was delay. we decided to take a long walk around the terminal. (since0

9. i enjoyed th film . the story was silly. (in spite of)

10 we live in the same street. we hardly ever see each orther. (despite)

11 my foot was injured . i managed to walk to the nearest village (although)

.12 they have very litter money. they are happy. (in spite of)

13 i got vry wet in the rain i had an umbrella (even though)

14 i couldn't sleep . i was tired (despite)

15 he liked th sweater. he decided not to buy it (though)

 

 

1
25 tháng 1 2019

1.Mary came to class late because his motorbike had a puncture.

SECTION A: PHONETICSI. Choose the word whose underlined part is pronounced differently from that of the others by circling the corresponding letter A or B, C, D.1. A. happy                 B. apple                        C. act                          D. aunt2. A. mind                   B. bike                          C. fit                            D. tidy3. A....
Đọc tiếp

SECTION A: PHONETICS

I. Choose the word whose underlined part is pronounced differently from that of the others by circling the corresponding letter A or B, C, D.

1. A. happy                 B. apple                        C. act                          D. aunt

2. A. mind                   B. bike                          C. fit                            D. tidy

3. A. school                 B. chair                        C. church                     D. chat

4. A. health                 B. team                        C. tea                           D. sea

5. A. sun                      B. fun                          C. son                          D. put

6. A. excited               B. interested                 C. worried                   D. painted

7. A. use                      B. computer                C. duty                         D. shut

8. A. chair                   B. fair                           C. pair                          D. are

9. A. how                    B. know                        C. town                        D. brown

10. A. season              B. break                      C. great                        D. steak

5
25 tháng 1 2019

ê og quân

25 tháng 1 2019

1. A. happy                 B. apple                        C. act                          D. aunt

2. A. mind                   B. bike                          C. fi                           D. tidy

3. A. school                 B. chair                        C. church                     D. chat

4. A. health                 B. team                        C. tea                           D. sea

5. A. sun                      B. fun                          C. son                          D. put

6. A. excited               B. interested                 C. worried                   D. painted

7. A. use                      B. computer                C. duty                         D. shut

8. A. chair                   B. fair                           C. pair                          D. are

9. A. how                    B. know                        C. town                        D. brown

10. A. season              B. break                      C. great                        D. steak

25 tháng 1 2019

cái gì bằng 9 cm vậy

25 tháng 1 2019

ngu thì đừng trả lời

25 tháng 1 2019

Malaysia has considered English as its official language for years.

25 tháng 1 2019

nhanh hộ mk cái

25 tháng 1 2019

x^10 + x^5 + 1 
= x^10 + x^9 - x^9 + x^8 - x^8 + x^7 - x^7 + x^6 - x^6 + x^5 + x^5 - x^5 + x^4 - x^4 + x^3 - x^3 + x^2 - x^2 + x - x + 1 
= (x^10 + x^9 + x^8) - (x^9 + x^8 + x^7) + (x^7 + x^6 + x^5) - (x^6 + x^5 + x^4) + (x^5 + x^4 + x^3) - (x^3 + x^2 + x) + (x^2 + x + 1) 
= x^8 (x^2 + x + 1) - x^7 (x^2 + x + 1) + x^5 (x^2 + x + 1) - x^4 (x^2 + x + 1) + x^3 (x^2 + x + 1) - x (x^2 + x + 1) + (x^2 + x + 1) 
= (x^2 + x + 1) (x^8 - x^7 + x^5 - x^4 + x^3 - x + 1) 

25 tháng 1 2019

??????????????????????

25 tháng 1 2019

A B C D M E F K H S I J

a) Bằng tính chất của hình bình hành và hệ quả ĐL Thales ta có: 

\(\frac{KM}{KH}=\frac{BF}{BC}=\frac{MF}{DC}=\frac{MF}{EF}\). Suy ra KF // EH (Theo ĐL Thales đảo) (đpcm).

b) Gọi giao điểm của EK và HF là S. Ta đi chứng minh B,D,S thẳng hàng. Thật vậy:

Gọi MS cắt EH và KF lần lượt ở I và J.

Theo bổ đề hình thang (cho hình thang KEHF) thì I là trung điểm EH và J là trung điểm KF

Do các tứ giác BKMF và DEMH là hình bình hành nên BD đi qua trung điểm của EH và KF 

Từ đó suy ra: 2 đường thẳng BD và MS trùng nhau hay 3 điểm B,D,S thẳng hàng => ĐPCM.

c) Dễ thấy: SKEF = SKHF (Chung đáy KF, cùng chiều cao vì KF//EH) => SKME = SFMH 

Mà SMKAE = 2.SKME; SMHCF = 2.SFMH nên SMKAE = SMHCF (đpcm).