Áp dụng tính chất của dãy tỉ số bằng nhau, ta được

\(\dfrac{a}{3}=\dfrac{b}{4}=\dfrac{b-a}{4-3}=23\)

Do đó: a=69; b=92

1 C

2 A

3 C

4 D

5 B

II

1 C

2 A

3 B

4 C

5 D

1 B

2 A

3 D

4 C

5 C

6 A

7 B

8 D

2 A

3 C

4 B

5 A

6 C

7 B

8 D

9 B

2 Is your family with you hear

3 Does your wife enjoy athletics

4 Do you like life here in Italy?

5 Are you worried about the Italian Champion, Giacomo Zanetti

6 Dp you have any advice for young athletes

2. Is your family here with you?

Yes, it is

3. Does your wife enjoy atheletics

Yes, she is

4. Do you like life here in Italia?

No, I don't

5. Are you worried about....?

Yes, I am

6. Do you have any advice for young athletes?

Yes, I do

Yes, No quest nên bạn có thể tùy ý trl nhé!