2. Can you tell me some information about the museum, please?

3. How many dollars does it take?

4. What are the business and close hour?

5. The last hours we sell tickets is five o'clock.

6. Can you tell me exactly where is the gallery?

Câu in đậm là câu cảm thán vì có từ cảm thán là "Hỡi".

1. D

2. C

3. C

4. A

5. D

6. D

7. D

8. B

9. A

10. C

4Al + 3O₂ ⇒ 2Al₂O₃

4K + O₂ ⇒ 2K₂O

S + O₂ ⇒ SO₂

C₂H₄ + 3O₂ ⇒ 2CO₂ + 2H₂O (hình như đề câu này bạn viết sai)

3x(x + 1) + 2x + 2 = 0

⇔ 3x(x + 1) + 2(x + 1) = 0

⇔ (x + 1)(3x + 2) = 0

⇔ x + 1 = 0 hoặc 3x + 2 = 0

⇔ x = 0 - 1  hoặc  3x = -2

⇔   x = -1    hoặc    x = \(\dfrac{-2}{3}\)

Program Tong_cac_so_tu_nhien;

Uses CRT;

Var i,d: Byte;

Begin

d:=0;

For i = 10 to 99 Do d:=d+i;

Writeln('Tong cac so tu nhien tu 10 den 99 la ',d);

End.

6. I was be introduced to Dr. Felix by Mr. Pike last year.

7. The survey test is taken (by them).

8. You will be asked several questions by the police tomorrow.

a) 1 + \(\dfrac{2x-5}{6}\) = \(\dfrac{3x}{4}\)

⇔ \(\dfrac{12+4x-10}{12}\) = \(\dfrac{9x}{12}\)

⇔ 12 + 4x - 10 = 9x

⇔ 4x - 9x = 10 - 12

⇔ -5x = -2

⇔ x = \(\dfrac{2}{5}\)

b) \(\dfrac{5x-4}{2}\) = \(\dfrac{16x+1}{7}\)

⇔ \(\dfrac{35x-28}{14}\) = \(\dfrac{32x+2}{14}\)

⇔ 35x - 28 = 32x + 2

⇔ 35x - 32x = 28 + 2

⇔ 3x = 30

⇔ x = 30 : 3 = 10