Viết kí hiệu nguyên tử X (đúng tên nguyên tố) trong các trường hợp sau: Tổng hạt trong nhân là 27. Số hạt mang điện là 26.

Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress. A. sculpture B. preserve C. wander D. workshop 8 I All students are looking forward _____________ their summer vacation in the countryside. A. to spend B. spend C. spending D. to spending 9 Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions Our city has some fashionableshops , but they are not very afford. A B C D A. city B. afford C. shops D. fashionable 10 Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the blank Mr. Brown and some volunteer conservationists are on a very dirty beach now. Today they are ready (23)___________ the beach a clean and beautiful place again. After listening to Mr. Brown’s instructions, they are divided ( 24)____ three groups.Group 1 and group 2 should check the sand, and group 3 has to check among the rocks. Garbage must be put into plastic bags, and they will be (25)_____ by Mr. Brown. He will take the bags to the garbage dump. Each member will be given a map to find the right place. They won’t (26)__________ the picnic lunch provided by Mrs. Smith until the whole area is clean. They are all eager to work hard so as to refresh this (27)__________ area. A. in B. on C. to D. into 11 Although many villagers moved to the cities, they ________________ A. kept producing their craft for sale. B. kept producing their craft for their own need. C. kept producing their craft for their relatives. D. kept producing their craft for their friends. 12 Read the passage then choose a correct answer to answer the questions Traditionally, rural villages in Vietnam produced handicrafts when they were not busy with planting or harvesting crops. Over time, many villages developed the expertise to make specialised products and so particular villages became famous for such things as weaving, woodwork, lacquer work and metal products. With industrialisation many villagers moved to the cities but maintained their craft skills and networks to produce products for the city market, for example craft villages make furniture, grow flowers or make utensils for the urban population. Other villages changed from making traditional crafts to producing different products desired by an industrialised society. For example, the villagers of Trieu Khuc changed from traditional paper making to recycling plastic. There are now many craft villages in Vietnam based on recycling plastic, paper or metal. When did rural villages in Vietnam produce handicrafts traditionally? A. Before they finish harvesting crops. B. When they were not busy with planting or harvesting crops. C. After they finish harvesting crops. D. When they were busy with planting or harvesting crops. 13 Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the blank Mr. Brown and some volunteer conservationists are on a very dirty beach now. Today they are ready (23)___________ the beach a clean and beautiful place again. After listening to Mr. Brown’s instructions, they are divided (24)____ three groups.Group 1 and group 2 should check the sand, and group 3 has to check among the rocks. Garbage must be put into plastic bags, and they will be (25)_____ by Mr. Brown. He will take the bags to the garbage dump. Each member will be given a map to find the right place. They won’t (26)__________ the picnic lunch provided by Mrs. Smith until the whole area is clean. They are all eager to work hard so as to refresh this (27)__________ area. A. cook B. eat C. do D. make

Trong đoạn trích Tức nước vỡ bờ ta cảm nhận được tình người cao đẹp của bà lão láng giềng dành cho gia đình chị Dậu .Viết một đoạn văn khoảng 2/3 trang giấy thi suy nghĩ về tình người cao đẹp trong cuộc sống hiện đại

giúp mk vs,mk đang gấp,giúp mk vs

`1.`Homes in the city are often better furnished than those in the countryside. `->`viết lại với worse `->`viết lại với not as Adj as `2.`A house is more beautifully decorated at New Year than during the year. `->`viết lại với từ trái nghĩa `->`viết lại với not as Adj as

giúp mk với năn nỉ các bạn luôn ý Giới thiệu nội dung của cuốn sách (có thể kể chuyển theo sách, giới thiệu sách, điểm sách, nêu cảm nhận và ý nghĩa về cuốn sách, …). Cuốn sách đã chọn : Ngô Quyền đại phá quân Nam Hán

Một chiếc ô tô đang chuyển động với vận tốc 36 km/h thì tăng tốc, xe chuyển động nhanh dần đều. Sau khi tăng tốc được 10 giây thì đạt vận tốc 90 km/h A. Tính gia tốc? B. Tính quãng đường đi được trong 5s?

Bài 1 : Cho a;b; khác 0 thỏa mãn a+b+c=0 CMR : 1/a^2 + 1/b^2 + 1/c^2 = ( 1/a + 1/b + 1/c )^2 Bài 2 : Tìm các số thực x thỏa mãn : ( x^3 - 3 ) + ( x-5) ^3 + 8.(4-x)^3 = 0

Giúp mik với , chỉ cần đáp án thôi ko cần giải thích đâu ạ

làm sao viết đc phân số trên hỏi đáp vậy ?