24
55
48

24
55
48

D

\(\dfrac{\sqrt{x}-1}{\sqrt{x}-2}+\dfrac{2-3\sqrt{x}}{x-4}\) = \(\dfrac{\left(\sqrt{x}-1\right)\left(\sqrt{x}+2\right)+2-3\sqrt{x}}{\left(\sqrt{x}-2\right)\left(\sqrt{x}+2\right)}\) = \(\dfrac{x+\sqrt{x}-2+2-3\sqrt{x}}{\left(\sqrt{x}-2\right)\left(\sqrt{x}+2\right)}\) = \(\dfrac{x-2\sqrt{x}}{\left(\sqrt{x}-2\right)\left(\sqrt{x}+2\right)}\) = \(\dfrac{\sqrt{x}\left(\sqrt{x}-2\right)}{\left(\sqrt{x}-2\right)\left(\sqrt{x}+2\right)}\) = \(\dfrac{\sqrt{x}}{\sqrt{x}+2}\)

Cos76*54' = 0.2266513074

1. Your father uses the internet everyday, doesn't he ?

2. He can speak English fluently, can't he ?

3. Your father bought that car last week, didn't he ?

4. That is your new house, isn't it ?

5. I suggest taking this train.

6. Do you have difficulty in understanding him ?

7. If you don't hurry up, you will miss the bus.

8. When did you last watch an action movie ?

9. If you don't work harder, you will fail in the exam.

10. Lucie is the tallest member in the class.

11. Unless she gets up early, she will miss the first train.

1. If I were you, I would have more physical activities.

2. William suggested inviting some friends for a game of bowling.

3. Despite her poor health, she still perseveres in her studies.

α = 25*6'

1. Polluted

2. Disappointed

3. Environmental

4. Extremely

5. Disappointed

6. Disappointment

7. complaint 

8. Harder

9. Angry

10. Well

1. D

2. A

3. B

4. C

6. B

7. C

8. A

9. D

10. B