Văn bản "Vượt Thác" sử dụng ngôi kể thứ mấy?

Có một thanh băng kép được làm từ nhôm và đồng, hỏi nếu làm lạnh thì băng kép sẽ cong về phía kim loại nào?

Answer:is - has

Mỗi khi Tết đến, cứ đến đúng hôm 30, em luôn nôn nóng chờ đến lúc 8 giờ tối để mở TV lên và xem Táo Quân

Dear Han!Hi Han, we haven't seen each other for a year, since August 2019. You must like Tet holiday. Me too. Tet is the busiest time of year, it is the one of the most important holiday of Vietnamese. We have to do many works like clean and decorate our house, cook delicious food, hang lantern, plant trees and flowers like peach blossom, kumquat tree, apricot blossom,... So many things we need to do at Tet, but it is very happy because we do with our family. At Tet, we wear new clothes, eat delicious food, visit relatives, receive lucky money in the red envelopes,... About me, Tet is one of the favorite holiday of me. What about you? Do you like Tet? What activities which you and your family do at Tet? You must reply me at the next letter. See you again!      Your friends           Lê Vân