giải phương trình:\(^{\dfrac{x+2}{x-2}}\)=\(\dfrac{2}{x^2-2x}\)+\(\dfrac{1}{x}\)

tính \(\dfrac{4x^2}{x-2}\)<0

rút gọn (\(\dfrac{4x^2-8}{x^2-4}\)- \(\dfrac{x}{x-2}\)+\(\dfrac{x-4}{x+2}\)) :\(\dfrac{x-2}{x^2+2x}\)

II. VOCABULARY

Choose the word or phrase that best completes each sentence below.

6. Collecting honey from the __________ requires a lot of skills.

     A. beehive B. beenest C. beehouse D. beehome

7. We are very sorry for any ________ caused by our late delivery.

     A. convenient B. convenience C. inconvenient D. inconvenience

8. In some rural areas, it’s difficult to find _______ in a house.

A. electric appliances B. electricity appliances 

C. electrical appliances D. electrician appliances

9. The villager’s _______ saved the travellers from starving.

     A. generosity B. generousy C. generousity D. generousness

10. Do not __________! They are doing a very important project.

     A. disturb B. annoy C. play D. make fun

11. People living a __________ life have to move a lot.

     A. moving B. stable C. nomadic D. commuting

12. __________ fruits in a farm is one of the most popular part-time job among students studying abroad.

     A. Picking B. Doing C. Taking D. Finding

13. Children in the countryside are used to _________ cattle in the field.

     A. walking B. herding C. following D. raising

14. A/An ___________ area of that forest – about more than 1000 hectares – was destroyed in the fire.

     A. vast B. tiny C. small D. inconsiderable

15. __________ kite is one of the most popular outdoor activities among children in the countryside.

     A. Doing B. Singing C. Flying D. Using

Choose the word or phrase that is CLOSEST in meaning to the part in eac of the following sentences.

16. It easy to get on well with neighbourhood in the countryside. People are all friendly and willing to help each other.

     A. to work together with B. to be a helpful friend of

     C. to have a friendly relationship with D. to exchange goods with

17. The baby is sleeping sound in her mother’s arms.

     A. deeply and peacefully B. easily to wake up

     C. sensibly D. safely

18. People in this village are all skilful craftsmen. Their products are qualified for the European market.

     A. professional B. amateur C. intelligent D. fast

Choose the word or phrase that is OPPOSITE in meaning to the underline part in each of the following sentences.

19. She’s a sociable child who loves to talk to anyone.

     A. outgoing B. anti-social C. lovely D. unfriendly 

20. The King was not brave enough to protect his kingdom and let the monster take the Princess away.