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khaiangel32
2 năm trước
Để khác thủy tinh người cho bột CaF2 vào bề mặt thủy tinh cần khắc rồi để axit H2SO4 vào đó sau đó đậy lại 1 thời gian sau mở ra rửa sạch vào chế tác tiếp .hãy giải thích việc làm đó
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I. Choose the letter A, B, C or D the word that has the underlined part different from others. 1. A. between B. bedroom C. behind D. equipment 2. A. pool B. food C. book D. school 3. A. compass B. racing C. country D. crazy 4. A. hall B. sofa C. apartment D. alike II. Choose the best answer A, B, C or D to complete the following sentences 1. – “____________ is it?” – It’s a stilt house. A. How B. Where C. What D. When 2. There is _____________ table in the living room. A. some B. the C. an D. a 3. How often do you ____________ judo at school? A. do B. have C. make D. take 4. Hellen ____________ a book in her bedroom now. A. reads B. is reading C. to read D. has read 5. - “Let’s go to the grocery store” – “____________”. A. Sorry. I’m busy B. Yes, please. C. No, thanks. D. Thank you. 6. My friend lives ____________ a villa. A. on B. for C. in D. of 7. My sister _____________ big beautiful eyes. A. has B. makes C. gets D. goes 8. I don’t like this film because it’s ____________. A. confident B. curious C. generous D. boring III. Put the verbs in the blanket into the correct form 1. Look! The girls (play) ____________ rope in the playground. 2. We usually (go) ____________ to school at 6. 3. Peter often (ride) ___________ bicycle to visit his hometown. 4. Molly and Sandy (never see) ________________ such an interesting film. IV. Use the words in the box to complete the following passage. Each word is used only once. big bookshelf chairs clothes dictionary near newspapers opposite right wall This is Nam's room. His room is not very (1) ......... There are two (2) ............, a table, a bed, a wardrobe and a (3) ............ in his room. The table is (4) ........... the window. There is an ink-pot, some books and an English-Vietnamese (5) .......... on the table. The bed is on the (6) ........... of the room. There are also some books and (7) ........... on the bed. The wardrobe is (8) .........the bed. Nam has many (9) .............. His clothes are all in the wardrobe. The bookshelf is on the (10) ............ There are many books on it. V. Read the passage carefully and answer the questions Hi. My name is Tony. I’m twelve years old. I’m a student at Nguyen Trai secondary school. There are four people in my family. father is forty – five. He is a teacher. My mother is forty – two. She is a nurse. My brother is fifteen and he is a student. Now we are in our living room. My father and brother is watching TV. My mother is talking on the phone. I am reading a comic. 1. What does Tony do? ……………………………………………………………………………………… 2. How many people are there in his family? ……………………………………………………………………………………… 3. What does his father do? ………………………………………………………………………………………. 4. Where are they now? ……………………………………………………………………………………….. 5. What is his mother doing? ………………………………………………………………………………………. VI. Rewrite the following sentences using the given words. 1. The lamp is behind the computer. (of) - The computer .......................................................................... the lamp. 2. There is a TV and a poster in our living room. (has) - Our living room .................................................. and a poster.

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