Tìm x:

\(\sqrt{x^2-6x+10}+\sqrt{x^2-6x+18}+\sqrt{x^2-6x+12}=4+\sqrt{3}\)

1. He was quietly proud..........  his literary achievements.

A. on B. at C. of D. with 

2. You have read this article on the website,  ...........?

A. don’t you B. aren’t you C. didn’t you D. haven’t you 

3. The phone..........  suddenly while Joanne was doing the housework.

A. rang B. was ringing C. had rung D. is ringing 

4. If I ........ ill, I wouldn’t have been absent from school.

A. hadn’t been B. weren’t C. had been D. would have been 

5. Lydia is reading that fascinating book on Spanish history........  you lent her last week.

A. where B. what C. which D. why

6. On Easter Day, people crowd the street to watch colourful  ......

A. picnics B. parades C. paradises D. contests

7.In order to save electricity, an ordinary 100-watt-light bulb should be replaced by a(n).........  bulb.

A. energy-saving B. energy-save C. saving-energy D. save-energy 

8. Crops are sprayed with..........  to kill insects.

A. fertilizer B. manure C. dung D. pesticide 

9. In the 18^th century, workers liked wearing jean cloth because it was strong and did not ........ easily.

A. wear off B. wear out C. wear on D. wear down 

10. This publisher is ........... out the newest novel of J. K. Rowling.

carrying B. bringing C. going D. cutting

Tìm x,y