Nêu đặc điểm chủ yếu của khai thác trắng, dần và khai thác chọn ?

cho biểu thức đại số :A=2x^2y+xz^100-3yz^0+3. Tính giá trị của biểu thức A tại x=0, y=-1, z=1.

hãy cho biết nội dung của khổ thơ đầu và khổ thơ cuối trong bài Tiếng gà trưa

CHIỀU THI RỒI MN ƠI

Rewrite the sentences in the passive voice.

1.  People use computers all over the world.

     Computer_____________

2.  They keep many ancient things in museums.

     Many ancient things _______________

3.  I do all my homework on my computer.

     All my homework _____________

4.  People make many famous films in Hollywood.

     Many famous films ______________________

5.  Ms Linh teaches our English lessons.

     Our English lessons ________________

6.  My father drives all of us to school every day.

     All of us ______________

8.  Hundreds of tourists visit my town every year.

     My town _____________

9.  People use Khue Van Pavilion symbol on all street signs of Ha Noi.

     Khue Van Pavilion symbol_____________

CẦN GẤP MỌI NGƯỜI ƠI

 Make questions with “How many/ How much" for the underlined part in

the following sentences.

1.  I have only a little luggage.

2.  I need some paper to write on.

3.  My father often reads two papers a day.

4.  I usually drink two litres of water every day.

5.  I need some bread to make sandwiches.

           MÁY KO CÓ DẤU GẠCH CHÂN NÊN DÙNG TẠM IN ĐẬM NHA 

Complete the sentences with the correct form of the words

1.Trà Giang is one of the most famous _____ of Viet Nam. Many people love her.      ACT

2.The ­­­___ she gave last night was marvellous.       PERFORM

3.The Đàn Bầu is a Vietnamese traditional________  instrument.    MUSIC

4.I don't like pop music because it is not as______  as rock and roll.      EXCITE

5.Mai wanted to share her____  with other people.      PLEASE

6.Trần Văn Cẩn is my favourite . He is famous for the painting “Little sister Thuy” (Em Thúy).      ART

7. _____is the art or taking and processing photographs.      PHOTOGRAPH

8.Water puppetry ____ in the villages of the Red River Delta.      ORIGIN

9. Van Cao was one of the most famous______ of Viet Nam.  MUSIC

10.The Temple of Literature is considered one of the most important______  sites of Viet Nam.      HISTORY

11.The school is quite normal, but its _____ are really beautiful.      SURROUND

12.The university grows and receives  from the ______society.      RECOGNISE

13.Is Hung Kings'Temple a_______  place in Viet Nam?      CULTURE

14.The students were_____  prepared for the final exam.      CARE

15.Was the _____ of the first Doctors' Stone Tablet  ordered by King Le Thanh Tong?      ERECT

16.Many students and teachers have contributed for the________  of the school.      DEVELOP

17.Thong Nhat Palace is a tourist_______  in Ho Chi Minh City.      ATTRACT

 MIK CẦN GẤP Ạ GIÚP MIK VS