\(Fe_3O_4+8HCL\underrightarrow{t^o}FeCl_2+2FeCl_3+4H_2O\)

phân loại ren, cho ví dụ mỗi ren. Công dụng của ren? Qui ước vẽ ren trục, ren lỗ, ren bị che khuất? Sự khác nhau về qui ước vẽ ren trục và ren lỗ

đặt câu ghép xác định C - V và quan hệ từ

make suitable questions with Can or Could for each situation

1. Old woman: (1).........................................?

Boy yes. what can I do for you?

Old woman : (2)...................................?

2. Woman: This suitcase is so heavy. (3).............................?

Man: Of course.

Woman Thank you

3. Husband: What's the matter?

Wife Something wrong with my bike.

(4)........................................?

Husband Let me see. Ok

4. Shop assistant (5).................................?

Customer: I'd like a kilo of beef

5. Susan: Pike, the TV is so luod. I can't study

(6)........................................?

Pike: Sorry, but this is my favourite program.

Susan So (7).......................................?

Pike Ok, I'll turn it down.

6. Mother: Dear, I nead some salt but can't go shopping now

(8).............................................?

Daughter Yes.mom

complete the sentences with the correct form of the verds in bteckets

1 I suggest ( go).................to the cafe toningt

2. Could you ( do )...............me a favor?

3. Can you help me (fix)...........the washing machine?

4. He joins in the Y & Y because he likes ( take)..............part in social activities

5. Please give the form to your parent and ask them (sign)...............it.

6. Are you free now? No, I'm busy ( tidy)...............the room

7. It's very interesting (join)..............in the Y&Y gruop.

8. The youth can participate in different programs such as ( raise)..............funds for the poor and ( plant) .........trees and flours in the parks.

rút gon biểu thức A= \(\left(x-2\right)\left(x+2\right)-\left(x-1\right)^2\)

Bài 1: phân tích đa thức thành nhân tử

a) 3x\(^3\) - 6x\(^2\) b) x\(^2\)+ 4x +4-9y\(^2\)

c)\(x^2-5x-6\) d) \(x^7+x^2+1\)

Bài 2: Tìm X

a)\(3\left(2x-4\right)+15=-11\)

b)\(x\left(x+2\right)-3x-6=0\)

d)\(\left(x+2\right)^2-\left(x-2\right)^5=64\)

SUPPLY THE CORRECT FORM OF THE ADCERBS IN BRACKETS

1 You speak..........as he does (quyckly)

2 He runs...........than you do (fast)

3 She dances...........than my sister does ( well)

4 Daisy speaks..........of all (well)

5 Tom always drives.............than his brother does (carelessly)

6 Peter understands English.......of all the student (little)

7 He speak English........than Jim does ( badly)

8 He works much .................. on his lessons than the others (hard)

9. Bill plays tennis..........of all the players ( badly)

10 The secretary seldom gets to work............as I do ( early)

SUPPLY THE CORRET FORM Ò THE ADJECTIVES IN BRACKETS

1 Her house is.............than mine (big)

2 That chair is...........than this one (comfortable )

3 Misa is.............of all the girls ( pretty)

4. That lesson is..............of all the lesson ( difficult)

5. Our car is............than theirs ( old)

6. Ken is not.............as my brother (tall)

7. The weathers is ..........today than is was yestesday (warm)

8 Dalat is ................from here than Vungtau (far)

9 We have...............difficulty with this part than the other one (little)

10 Does your country have............ weather as this? ( bad)

Lẽ phải là gì? Vì sao phải tôn trọng lẽ phải? Giải thích câu tục ngữ " Cây ngay không sợ chết đứng "