1. Ha Long Bay has twice been ________ by UNESCO as a World Natural Heritage Site.

A. recognized.           B. discovered.

C. experienced.         D. developed.

2. If the weather _______ fine tomorrow, we may go for a swim.

A. were.                  B. is.

C. will be.                D. would be.

3. Miss Lan, _____ I met yesterday, is my English teacher.

A. which.          B. that.

C. who.            D. when.

4. When spending a week in Berlin, you can ________ the city itself and its surroundings.

A. travel.              B. guide. 

C. see.                 D. explore.

5. _____the chicken in white wine for one hour before roasting.

A. Slice.             B. Marinate.

C. Chop.            D. Grate.

6. Where are _____ tickets I gave you yesterday?

A. an.           B. ɸ.

C. the.          D. a.

7. He bought a _____ of bread in the supermarket yesterday.

A. bunch.       B. loaf.

C. clove.        D. pinch.

8.  When I travelled to Greece, I bought this ring as a _____ of the country.

A. gift.          B. present.

C. thing.       D. souvenir.

9. Australian English is spoken as the _______ language by most people in Australia.

A. international.       B. first.

C. second.               D. foreign. 

10. The seaside resort always gets overcrowded in ________ season.

A. peak.            B. low.

C. hard.            D. off.

\(\sqrt{3x-5}+\sqrt{7-3x}\)

Tìm gtnn của \(A=x+\dfrac{7}{x}\)

\( \left(a+b+c\right)\left(\dfrac{1}{a}+\dfrac{1}{b}+\dfrac{1}{c}\right)\ge9\)

\(\left(a+b\right)\left(\dfrac{1}{a}+\dfrac{1}{b}\right)\ge4\)

\(a+b+c\ge\sqrt{ab}+\sqrt{bc}\)

liên hệ bản thân về những việc làm tốt góp ích vào việc phát triển nghề trồng cây ăn quả mang lại những lợi ích chung cho cộng đồng