Cho điểm O vẽ n tia góc O. Tính góc nOz.

n = 10 ; n = 15 ; n = 20.

GIẢI:

( 1 ; 4 ) , ( 1: 3 ) , ( 2 ; 3 ) , ( 2 ; 4 ).

y=33 

chu gi nua

Ghi lại những câu thơ có sử dụng phép so sánh trong bài thơ '' Đêm nay Bác không ngủ '' của tác giả Minh Huệ. Cho biết chungs thuộc kiểu so sánh nào. Phân tích tác dụng gợi hinhf, gợi cảm của một phép so sánh mà em thích.

Work in pairs.Ask and answer the following questions about your Tet holiday.

1.When is your Tet holiday ?

2.How long is your Tet holiday ?

3.What will you do before Tet ?

4.How will your family decorate your house ?

5.What are the symbols of your Tet holiday ?

6.What dishes do people usually cook on Tet ?

7.What are the activities people should/shouldn't do ?

8.What will you do on the first three days of the year ?

Choose the best answer ( A , B , C ) to each question.

1.When is Christmas Day ?

A. On the 24th of December B.On the 25th of December C.On the 1st of January

2.People decorate their houses with ....................

A.trees B.lights C. A and B

3.What is NOT true ?

A.People put presents in their rooms.

B.People decorate their houses before Christmas.

C.Santa Claus gives presents to children at Christmas.

4.What do people do on New Year's Eve ?

A.Have parties B.Gather at Times Square C.A and B

5.When there's 10 seconds left , what do people do?

A.Sing songs

B.Count down the time

C.Have parties