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2 năm trước
Cho hỗn hợp A gồm Al và một oxit sắt. Chia hỗn hợp A thành 2 phần bằng nhau. Phần 1: Cho tác dụng với dung dịch H2SO4 loãng thu được 6,72 lít khí (đktc). Phần 2: Thực hiện phản ứng nhiệt nhôm hoàn toàn, thu được hỗn hợp B. Cho B tác dụng với dung dịch NaOH dư thu được 1,344 lít khí (đktc) và chất rắn C. Cho chất rắn C vào dung dịch H2SO4 loãng, dư được 4,032 lít H2 (đktc). Công thức của oxit sắt là
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Bài 2. Điền từ (hoặc chữ) đúng vào chỗ chấm 1. How --- are you? – I'm ten years old. 2. Open the book and r- -d after me, please. 3. W- -n is your birthday? 4. This cak- is for you.. 5. Write ab- -t your family, please. 6. When is Peter's birthday? – It's – April. 7. Happy birthday – you, Tommy. - Thank you ---- much 8. There is a - - the living room. 9. Trang - - my friend. 10. My house is n – w. 11. Where is Jean from? – He is f- -m France. 12. How are you t—ay? 13. What col-ur is this? – It's red. 14. Why is Quynh happy? – Becau –e today is her birthday. 15. My sister is a student at Hoang Mai Pimary Sch---. 16. Your bedroom is big. How about the bathroom? Is it big t- -? 17. This gift is for you. - Thank you ---- much. 18. Wh- -e is David from? – He is from England. 19. Hello, I'm Alan. How are you? – I'm fine, thanks. --- you? 20. How old -- your sister? – She is eleven years old. 21. That is my b-droom. 22. --- is Alan so happy? - Because today is his birthday. 23. This is my friend. –r name is Alice. 24. My sister is twelve year- old. 25. Thank you very much, Lan Anh. You --- welcome.

Question 1. Let's ...hello to the teacher A. go B. say C.know D.to Question 2. There is ... dog in my house A. a B. an C. two D.is Question 3. Give .... a pen, please. A. my B. my's C. me D. I Question 4. I ... reading a book. A. is B. are C. am D. am's Question 5. This cake ... for you, Mary. – Thank you very much. A. Is B. are C. a D. an Question 6. Tommy is my friend. He is a ...at Quang Trung Primary School. A. Woker B. doctor C. farmer D. student Question 7. Her house is ...big A. very B. much C. many D. old Question 8. Yoko is ...Japan. A. at B. under C. up D. from Question 9. August is the eighth month ... the year. A. by B. on C. of D.from Question 10. Draw ... picture, please. A. a B. an C. a's D. an's Question 11. I ... watching television. A. am B. is C. are D. aren't Question 12. There ... two boys in my class. A. is B. are C. many D. isn't Question 13. My birthday is ... May 5th. A. in B. on C. of D. from Question 14. Hello, ...Sean A. my B. my name C. I D. I'm Question 15. I can ... a bicycle. A. rides B. riding C. ride D. ride's Question 16. How ...desks are there in your classroom? A. any B. many's C. any's D. many Question 17. I ...two cats A. has B. haven't C. have D. hasn't Question 18. I'm from England. – I'm from England,... A. and B. too C. end D. two Question 19. You cat ...nice. A. is B. are C. an D. a Question 20. I'm ....America. A. in B. a C. from D. to Question 21. Thank you very much. – You ...welcome. A. is B. am C. are D.isn't Question 22. Look at the..., please. A. board B. board's C. say D. tell Question 23. Where are you from, Alice? - ... from Singapore. A. My B. Me C. Am D. I'm Question 24. March is the ... month of the year. A. First B. second C. third D. fourth Question 25. What...is it? – It's white. A. colours B. colour C. colour's D. colourn't Question 26. ... do you like Art? – Because I can learn how to draw a picture A. who B. when C. what D. why Question 27. I ... sorry. I'm late A. is B. are C. am D. not Question 28. The box ... blue. A. are B. aren't C. is D. this Question 29. His father's birthday is ... November. A. in B. on C. of D. from Bài 2. Điền từ (hoặc chữ) đúng vào chỗ chấm 1. How --- are you? – I'm ten years old. 2. Open the book and r- -d after me, please. 3. W- -n is your birthday? 4. This cak- is for you.. 5. Write ab- -t your family, please. 6. When is Peter's birthday? – It's – April. 7. Happy birthday – you, Tommy. - Thank you ---- much 8. There is a - - the living room. 9. Trang - - my friend. 10. My house is n – w. 11. Where is Jean from? – He is f- -m France. 12. How are you t—ay? 13. What col-ur is this? – It's red. 14. Why is Quynh happy? – Becau –e today is her birthday. 15. My sister is a student at Hoang Mai Pimary Sch---. 16. Your bedroom is big. How about the bathroom? Is it big t- -? 17. This gift is for you. - Thank you ---- much. 18. Wh- -e is David from? – He is from England. 19. Hello, I'm Alan. How are you? – I'm fine, thanks. --- you? 20. How old -- your sister? – She is eleven years old. 21. That is my b-droom. 22. --- is Alan so happy? - Because today is his birthday. 23. This is my friend. –r name is Alice. 24. My sister is twelve year- old. 25. Thank you very much, Lan Anh. You --- welcome. Bài 4. Dùng từ (hoặc chữ) thích hợp điền vào các câu sau 1. That's _ y friend. 2. What's her na _ e? 3. Is ___ s yours schoo? 4. She is in the classr __ m. 5. A; How's the weat __ r today? B: It's very hot today. 6. I'm 7 years o __. 7. H __ name is Mary. 8. I am _ rom Singapore. 9. What col __ r is it? – It's green. 10. Your sch ___ is big. Đề số 2: Đề kiểm tra môn tiếng Anh lớp 4 cuối học kì 2 số 2 Bài 1. Choose the most suitable answer by slecting A, B, C, or D. 1. What is your ......? – My name is Tommy. A. game B. names C. name D. name's 2. I'm ..... America. A. in B. a C. from D. too 3. There .... two boys in my class A. is B. many C. are D. isn't 4. Hi, my ..... Alan A. name is B. names' C. names D. is name 5. Jimmy is happy because to day is .... birthday A. her B. she C. his D. he 6. I .... two cats. A. has B. haven't C. hasn't D. have 7. Your cat .... nice A. is B. are C. an D. a 8. August is the eight month .... the year. A. by B. on C. of D. from 9. The box .... blue A. are B. aren't C. is D. this 10. I ... sorry. I'm late A. is B. are C. am D. not

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