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Cho biểu thức P=( √x / √x - 1 - 1/x- √x):(1/ √x + 1 + 2/x-1) a, Tìm điều kiện của x để P xác định b, Rút gọn P c, Tìm các giá trị của x để P<0

Cali: Con gái trưởng thành khi yêu một người. Tone sáng

Ex5.Complete the second sentence so that it means the same as first one. Use the word in brackets. 1. Robotics doesn’t really interest me. (in) I’m a. I am not interesting in robotics. b. I am not interested in robotics. c. I am not interest in robotics. d. I am interested in robotics. 2. Jack participated in a robotics competition last month. (part) Jack . a. Jack took part in a robotics competition last month. b. Jack took part to a robotics competition last month. c. Jack take part in a robotics competition last month. d. Jack took part on a robotics competition last month. 3. This robot is capable of cooking a variety of different meals. (can) This robot . a. This robot can cooking a variety of different meals. b. This robot can cooks a variety of different meals. c. This robot can be cook a variety of different meals. d. This robot can cook a variety of different meals. 4. My computer didn’t work last night, so I couldn’t email you. (because) I . a. I emailed you last night because my computer didn’t work. b. I could email you last night because my computer didn’t work. c. I couldn’t email you last night because my computer didn’t work. d. I couldn’t email you last night because my computer doesn’t work. 5. I do not run as fast as I did when I was young. (could) When I . a. When I am young, I could run faster than I do now. b. When I were young, I could run faster than I do now. c. When I was young, I could not run faster than I do now. d. When I was young, I could run faster than I do now. 6. It wasn’t necessary for me to finish my homework yesterday. (need) I . a. I didn’t need to finish my homework yesterday. b. I wasn’t need to finish my homework yesterday. c. I don’t need to finish my homework yesterday. d. I didn’t need finishing my homework yesterday. 7. She started to work at the school canteen two months ago. (for) She a. She has started to work at the school canteen for 2 months. b. She have worked at the school canteen for 2 months. c. She has worked at the school canteen for 2 months. d. She has worked at the school canteen for 2 months ago. 8. You should study hard, or you won’t pass the exam. (will) If you _________________________________________________ a. If you don’t study hard, you will pass the exam. b. If you study hard, you will pass the exam. c. If you studying hard, you will pass the exam. d. If you studied hard, you will pass the exam. Ex 6. Complete the second sentence so that it means the same as first one. 1. There are a few students taking part in the event. There aren’t . a. There aren’t many students taking part in the event. b. There aren’t any students taking part in the event. c. There aren’t much students taking part in the event. d. There aren’t some students taking part in the event. 2. They have lived here for two years. They moved . a. They moved here for two years ago. b. They moved here for two years. c. They moved here since two years ago. d. They moved here two years ago. 3. You should turn unwanted lights off, or you will waste a lot of electricity. If . a. If you don’t turn unwanted lights off, you will waste a lot of electricity. b. If you turn unwanted lights off, you will waste a lot of electricity. c. If you aren’t turn unwanted lights off, you will waste a lot of electricity. d. If you don’t turn unwanted lights off, you won’t waste a lot of electricity. 4. Let’s write about the three Rs? Why . a. Why don’t we writing about the three Rs? b. Why don’t we write about the three Rs? c. Why are we write about the three Rs? d. Why aren’t we write about the three Rs? 5. Learning about recycling is fun. It’s . a. It’s fun to learning about recycling. b. It’s fun we learn about recycling. c. It’s fun to learn about recycling. d. It’s fun we learning about recycling. 6. Plastic bags are cheaper than reusable bags. Reusable bags are . a. Reusable bags are more expensive than plastic bags. b. Reusable bags are expensive than plastic bags. c. Reusable bags are much expensive than plastic bags. d. Reusable bags are most expensive than plastic bags. 7. It’s not good to throw old clothes away. You . a. You shouldn’t throwing old clothes away. b. You should throw old clothes away. c. You should to throw old clothes away. d. You shouldn’t throw old clothes away. 8. Remember to turn the tap off when you are brushing your teeth. Don’t . a. Don’t forget turning the tap off when you are brushing your teeth. b. Don’t forget to turn the tap off when you are brushing your teeth. c. Don’t forget to turning the tap off when you are brushing your teeth. d. Don’t forget you turn the tap off when you are brushing your teeth.

Cmr: các biểu thức sau có giá trị dương (âm) với mọi gtri của x F= 3x²-6+5 Tìm giá trị lớn nhất( nhỏ nhất)nếu có : bthuc E=2x²+3x+4 K=-2x²+5x Mọi người giúp em với ạ em sẽ rate 5 sao ạ

1 A: Shall I prepare Jerry's lunch? B: No, it's alright. He's preparing it ...himself.... 2 A: Did Helen have her car repaired at the garage? B: No. She repaired it … 3 A: What a beautiful dress! Where did you buy it? B: I didn't buy it. I made it … 4 A: Who decorated your house for you? B: No one. We decorated it … 5 A: Are Beth and Jim working on the same project? B: Yes, they have decided to help … 6 A: Did you help Lucy and Greg to finish their homework? B: No. They finished it … 7 A: Charles and Bill are always fighting. B: I don't think they like … 8 A: Should I switch off the kettle? B: No. It will switch … off when the water's boiled. 9 A: Can you iron this shirt for me, please? B: Don't be so lazy! Iron it … 10 A: Stuart and I are so happy with the garage we built. B: I'm glad. I can't believe you built it … ! 11 A: Emma and Cath are good friends. B: Yes. They phone … everyday. 12 A: Why are the children shouting? B: Oh! They're just teasing … . 13 A: Paul is only two years old. B: I know, but he can dress … . 14 A: I'm leaving now. B: Well, behave … at the party. 15 A: Sam is pleased to see Alan, isn't he? B: Yes. They don't see … very often. 16 A: What have you done to your finger? B: I cut … with a sharp knife. 17 A: Help … to more orange juice. B: Thanks. I will. 18 A: Shall I come to the dentist's with you? B: No, I'd rather go by … . 19 A: How did you get my sister's book? B: She gave it to me … !

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làm hộ mình với mình cảm ơn trước

“Sau trận bão, chân trời, ngấn bể sạch như tấm kính lau hết mây hết bụi. Mặt trời nhú lên dần dần, rồi lên cho kì hết. Tròn trĩnh phúc hậu như lòng đỏ một quả trứng thiên nhiên đầy đặn. Quả trứng hồng hào thăm thẳm và đường bệ đặt lên một mâm bạc đường kính mâm rộng bằng cả một cái chân trời màu ngọc trai nước biển hửng hồng. Y như một mâm lễ phẩm tiến ra từ trong bình minh để mừng cho sự trường thọ của tất cả những người chài lưới trên muôn thuở biển Đông...” (Ngữ văn 6, Tập II) a. (0,5 điểm): Đoạn trích trên thuộc văn bản nào?Tác giả là ai? b. (1 điểm): Văn bản chứa đoạn trích trên thuộc thể loại gì?Nêu hoàn cảnh sáng tác của văn bản chứa đoạn trích trên? c. (1 điểm): Xác định và nêu tác dụng của một biện pháp tu từ trong đoạn trích trên? d. (0.5 điểm): Dựa vào nội dung của văn bản chứa đoạn trích, đặt một câu trần thuật đơn có từ “là”? Câu 2 (5 điểm): Học sinh chọn một trong hai đề sau: Đề 1: Hãy viết bài văn miêu tả một cảnh đẹp mà em yêu thích. Đề 2: Hãy viết bài văn miêu tả một phiên chợ theo trí tưởng tượng của em. Chúc các em làm bài tốt!

giúp em với!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!