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nglttnlxy
2 năm trước
Cho 30,7 gam hỗn hợp gồm kẽm và sắt tác dụng hoàn toàn với dung dịch HCl 2M, sau phản ứng thu được 11,2 lít khí ở đktc. a) Tính thành phần phần trăm theo khối lượng mỗi kim loại trong hỗn hợp ban đầu b) Tính thể tích dung dịch HCl đã phản ứng
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Ex1. Choose the best option A, B, or C to complete the sentences. 1. Phong and Nam_________in grade 6. A. am B. is C. are 2. Binh: How do you go to school? Minh:………go to school……bike. A. He/ by B. She/ in C. I/ by 3. I do my homework in the afternoon but my brother does ……homework after dinner. A. my B. her C. his 4. My sister________ to the movie every weekend. A. goes often B. often goes C. often go 5. Policeman: Where …… your mother work? Mai: - …….. in a factory. A. do…./She work B. does/ He works C. does/ She works 6. I study at Thai Hoc lower Secondary School but my brother …..at Vu Huu School. A. study B. studies C. studying 7. Listen! Someone ………singing. A. is B. are C. am 8. We ………Phu Quoc island last month. A. visit B. visited C. visiting 9. ………… did you go yesterday morning? I ……… to the bookshop. A. What/ go B. Where/ went C. When/ went 10. Grandma: What…..the weather be like tomorrow? – Niece: It’ll be dry and cool. A. visit B. visited C. visiting Ex2. Fill ONE word in each gap. My full name is. I am … class 6C. I (2)….to Thai Hoc Lower Secondary School. My new school (3)…….big and nice. There (4)……. many trees in the school yard, so It …..green and fresh here. Our new teachers (5)…….very friendly and helpful. I like my school very much.

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