hãy viết một đoạn văn sử dụng ít nhất 5 từ láy ( viết về chủ đề trường học)

cho đường thẳng d và bốn điểm A , B, C , D sao cho AB vuông góc với đường thẳng d , CD vuông góc với đường thẳng d , BC vuông góc với đường thẳng d . chứng minh rằng A,B,C,D thẳng hàng

Đặt câu hỏi cho câu trả lời

1 ) last school year , Tan went to the library twice a week

circle the corect sentence

11. She/ stay/ uncle and family/ at the moment.

a. She stays with her uncle and family at the moment.

b. She staying with her uncle and his family at the moment.

c. She’s staying with her uncle and his family at the moment

.d. She stayed with her uncle and his family at the moment.

12. Trung and Nga/ newcomers to the town.

a. Trung and Nga are newcomers to the town

.b. Trung and Nga will are newcomers to the town.

c. Trung and Nga is newcomers to the town.

d. Trung and Nga’s are newcomers to the town.

13. They/ not have/ friends/ here.

a. They doesn’t have any friends here

.b. They not have any friends here.

c. They have no any friends in here.

d. They don’t have any friends here.

14. Nga/ unhappy/ because/ miss/ old friends and teachers.

a. Nga is be unhappy because she misses old friends and teachers.

b. Nga is unhappy because she is miss old friends and teachers

.c. Nga is unhappy because she misses her old friends and teachers.

d. Nga unhappy because she misses her old friends and teacher.

15. It/ 300 meters/ his house to the swimming pool.

a. It does 300 meters from his house to the swimming pool.

b. It’s 300 meters from his house to the swimming pool.

c. It be 300 meters from his house to the swimming pool.

d. Its is 300 meters from his house to the swimming pool.

tìm giá trị của các biểu thức sau :

A= 5a^3b^4 voi a = -1 , b = 1

B= 9a^5b^2 với a= 1 , b = -1

C= ax + bx+ay+by với a+b= -2 và x+y = 17

bài 2 : tìm max, min của

A= /x-3/+1

b= 3-/x+1/

C= ( x-1)^2 + /2y+2/ -3

tìm x biết

a ) x^2 - 2x+3 chia het cho x-1

b) 2x-3 + ( y-1)\(^2\) + ( 27-1 )\(^2\) \(\le\) 0

viết lại câu giữ nguyên nghĩa

1) How many Crayons does Julia have ? ( got)

2 ) i cycle to school ( by )

3) they travel to hanoi by plane ( fly )

4) how much is an ice-cream ? ( price)