Mẹ đưa Bình 120 ngàn đồng đi mua vở. Loại vở
Bình mua giá 7 ngàn đồng 1 cuốn. Nhân dịp
khai trương nhà sách giảm giá 20% các sản
phẩm. Vậy Bình có thể mua được nhiều nhất
bao nhiêu cuốn vở?
 

I.            Make questions for underlined words.

1. I usually have breakfast at 6 a.m.

……………………………………………………

2. Lan lives with her aunt.

……………………………………………………

3. It’s three kms from my house to the post office.

……………………………………………………

4. I’m absent from class because I’m sick.

……………………………………………………

5. My father is a teacher.

……………………………………………………

6. I go to school by bike.

……………………………………………………

7. We do experiments in the Physics class.

................................................................................

8. Ba learns to play guitar after school.

...................................................................................

9. Tuan goes to the sport club once a week.

...................................................................................

10. Hoa is good at painting.

.....................................................................................

11.Nam and Hung are reading magazines in the library.

........................................................................................

12. I often play computer games in my free time.

...........................................................................................

Choose the word whose underlined part pronounced differently

1.      A. interested                    B. bored                      C. tired                                    D. amazed

2.      A. learn                            B. cheap                      C. meal                        D. easy

3.      A. present                         B. electronics              C. Physics                   D. please

4.      A. activity                        B. experiment              C. excited                    D. practice

Choose the word whose main stress is placed differently

5.      A. experiment                  B. electronics              C. important                D. appliance

6.      A. recess                          B. correct                    C. essay                       D. event

7.      A. energetic                    B. popular                   C. computer                D. activity

8.      A. repair                          B. enjoy                       C. complain                 D. study

\(\left(\dfrac{1}{3}x+\dfrac{4}{3}\right)\left(-\dfrac{1}{5}x+\dfrac{3}{5}\right)\)=0

mik ko bk vẽ hình trên này:)
a) xét tam giác ABC ta có:
A+B+C=180
C=180-80-70=30
b)vì AD là phân giác góc BAC: BAC=DAC=80:2=40 độ

\(\dfrac{-1}{2}-\dfrac{-3}{5}-\dfrac{1}{9}-\dfrac{1}{127}-\dfrac{7}{18}+\dfrac{4}{35}-\dfrac{-2}{7}\)