về thầy cô :

Viên phấn nào trên tay 
Thầy dạy em học chữ 
Bụi phấn nào bay bay 
Vương tóc thầy trắng xóa 

Bao mùa thu đi qua 
Thầy xưa nay đã già 
Khai trí em thêm sáng 
Cho cây đời nở hoa 

Từng lời giảng yêu thương 
Bao lớp trẻ xa trường 
Gói hành trang thêm nặng 
Nghĩa tình thầy vấn vương 

Mai lớn khôn nên người 
Khi nào em quên được? 
Công ơn người đi trước 
Dìu dắt chúng em theo. 

thank you nhưng sorry nhé bạn có chép trên gogle ko vậy hay bạn tự sáng tác 100%

Hjhj hey. Mk ko lm dk

hate always => always hate

hate always -> always hate

always hate =>hate always
chuc ban hoc tot

43,19 : 21 = 2,05 ( dư 0,14)

8, were

9,don't hurry

10,doesn't spend

1, Lan is shorter than Trang

2,Lan isn't as tall as trang

3,Mr John is the best teacher in this school

4,My house is the smallest in the village

5,Learning Chinese is more difficult than learning English

2.unless

3,unless

4,if

5.if

6.unless

7.if

8.unless

B5:

1E

2H

3A

4G

5B

6C

7F

8D

B6:

2. won't stay - find

3.hoover - will make 

4.will show - wait 

4 năm trước

chi gấp 3 lần tuổi em

tk mk nha

thanks

cảm ơn từ thức 14 nha

    Mình thích môn Thể Dục cơ =)) Nhưng cứ viết cho bạn về môn Tiếng Anh 

 My favorite subject is English. The first reason I like this subject is that itis a core subject which is vital and essential in my career path. I try to learn thisinternational language well so that I can communicate with foreigners and find agood job in the future. Furthermore, learning English well can help me readbooks or magazines in English. Through reading things in English, I can beexposed to various cultures and customs. Besides, my English teacher is adedicated person who can engage me in her lessons and bring the passion for me.I found her lessons interesting because she delivered them in a way that I reallyliked. In short, English is an important subject which I am really keen on.

4 điều nên viết:
1. What subject
2. What it deals with
3. Why I like it
4. The end

I learn many subjects in school. But the one I enjoy learning is History.

History helps us know what people did and how they lived ages ago. It also tells us how men had to manage to make their lives better and better.

Many learners, however, do not like to read History. They say that there are too many names and dates to remember. But they do not understand that if we know nothing about the past, we cannot have a good knowledge of the present. For example, if we wish to know how men learnt to use fire or clothes, we have to know what men did in the past to travel at night or to keep themselves warm. In fact, only a study of History will make us realize that what we do today is the result of what our ancestors did in the past. History therefore is a long story of man’s struggle through the ages. As we read the story, we are learning many interesting things.

I enjoy learning history. I have a large number of history books in my house. Some day, I might even write a history book myself.

Thanks 

Bài 4:

a) Vì $ABC$ cân tại $A$ nên $AB=AC$ và $\widehat{ABC}=\widehat{ACB}$

$\Rightarrow 180^0-\widehat{ABC}=180^0-\widehat{ACB}$

hay $\widehat{ABQ}=\widehat{ACR}$

Xét tam giác $ABQ$ và $ACR$ có:

$AB=AC$ (cmt)

$\widehat{ABQ}=\widehat{ACR}$ (cmt)

$BQ=CR$ (gt)

$\Rightarrow \triangle ABQ=\triangle ACR$ (c.g.c)

$\Rightarrow AQ=AR$

b) 

$H$ là trung điểm của $BC$ nên $HB=HC$

Mà $QB=CR nên $HB+QB=HC+CR$ hay $QH=HR$

Xét tam giác $AQH$ và $ARH$ có:

$AQ=AR$ (cmt)

$QH=RH$ (cmt)

$AH$ chung

$\Rightarrow \triangle AQH=\triangle ARH$ (c.c.c)

$\Rightarrow \widehat{QAH}=\widehat{RAH}$

Hình bài 4:

Bài 5:a) 

Xét tam giác vuông $AHB$ và $AHC$ có:

$AB=AC$ (do $ABC$ là tam giác cân ở A)

$\widehat{ABH}=\widehat{ACH}$ (do tam giác $ABC$ cân ở A)

$\Rightarrow \triangle AHB=\triangle AHC$ (cạnh huyền- góc nhọn)

$\Rightarrow HB=HC$ và $\widehat{BAH}=\widehat{CAH}$ (đpcm)

b) 

$HB=HC$ nên $H$ là trung điểm $BC$. Do đó $HB=BC:2=4$ (cm)

Áp dụng định lý Pitago:

$AH=\sqrt{AB^2-AH^2}=\sqrt{5^2-4^2}=3$ (cm)

c) 

Xét tam giác vuông $ADH$ và $AEH$ có:

$AH$ chung

$\widehat{DAH}=\widehat{EAH}$ (do $\widehat{BAH}=\widehat{CAH}$)

$\Rightarrow \triangle ADH=\triangle AEH$ (cạnh huyền- góc nhọn)

$\Rightarrow DH=EH$ nên tam giác $HDE$ cân tại $H$.