tại sao nước có tác động hoà tan đá và nhiều khoáng vật?

Help mik vs..................................

chỉ mình bài 38 được ko các bạn , giúp mình

Make questions for the underlined parts 1. We had to stand up because we wanted to see the screen more clearly. 2. They built that house in 2002. 3. He got married in Paris. 4. She must put the medicine on the shelf. 5. Mai cleans the floor every day. 6.My brother spent his holiday helping the people in remote areas. 7. I will come back in an hour. 8. They were watching TV when I came

Hệ số x^2 trong: 4x^5 + 7x^2 + 9x + 11x^3 là

Có một số tiền. Nếu mua loại vở 4 000 một quyển thì được 27 quyển. Hỏi cùng số tiền đó mà mua loại vở 12 000 một cuốn thì mua được bao nhiêu cuốn? Giai bằng cách tìm tỷ số

giúp em làm gấp mấy bài này với ạ

tính a biết (a - 19.99) : 2 = 1.1+1.2+1.3+1.4+...+9.7+9.8+9.9 Trả lời: a = ....................... (nhập Kết quả dưới dạng số thập phân thu gon nhất)

VI. Choose the best answer (A,B,C or D) to complete the passage. Ao dai is the (1)........................ dress of Vietnamese women. It’s also the symbol of our country. When foreigners talk about Vietnam, they surely talk about Ao dai. Ao dai is very (2)..................with different designs and colors. It is a long silk tunic which consists of two parts and (3).................over loose pants. The slits on the sides help its wearers move easily. Not many people know the (4)...................of Ao dai , when and where it exactly appeared and how it was orginally designed. Some researchers say it started to be worn centuries ago. Traditionally, both men and women (5).................... Ao dai as casual clothes . Now in some parts of the country , schoolgirls often wear while Ao dai as uniform. The white color of the Ao dai (6)........................the purity of their school age . The beauty of schoolgirls in white Ao dai always in spires many photopraphers, poets and musicians. Although there are other (7).....................of modern clothing today, Vietnamese women still choose Ao dai as their favorite (8).....................to wear on special occcasions. 1. A. tradition B. traditional C. traditionally D. nation 2. A. unique B. practical C. convenient D. popular 3. A. wear B. wore C. is worn D. worn 4. A. histoty B. beginning C. start D. process 5. A. wear B. wore C. is worn D. worn 6. A. tells B. explains C. symbolizes D. modernizes 7. A. styles B. types C. designs D.forms 8. A. cloth B. cloths C. clothes D. clothing giúp vs em cần gấp

mn giúp mình vs, có 1 bài thôi tối phải nộp rồi