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suong5984
2 năm trước
Dãy chất nào sau đây, gồm các chất khí nhẹ hơn không khí là A: O2 , Cl2 , H2 S. B: N2 , O2 , Cl2 . C: CO, CH4 , NH3 D: Cl2 , CO, H2 S.
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Các câu hỏi liên quan

I. Re-arrange the words to make meaningful sentences. 1. housework. / help/ Robots/ do/ the/ will/ me/ =>___________________________________________________________________ 2. library/ last night. / She/ the/ worked/ in/ =>____________________________________________________________________ 3. an/ on/ There/ TV/ tonight. / is/ interesting film =>____________________________________________________________________ 4. cold. / has/ The/ been/ weather =>____________________________________________________________________ 5. plays/ My/ often/ games/ family/ together. / =>____________________________________________________________________ II. Complete the second sentence so that it means the same as the sentence before. 1. My favourite programme on TV is cartoons. =>I like________________________________________________________________ 2. There are four interesting films on VTV3 today. =>Today VTV3 has______________________________________________________ 3. She is interested in watching television. =>She likes_____________________________________________________________ 4. They wanted to go fishing, but they had too much work. =>Although they wanted__________________________________________________ 5. This book is cheaper than that book. => That book is_________________________________________________________ III. Make sentences using the words and phrases given: 1. What time/ you/ go/ gym/ yesterday? =>____________________________________________________________________ 2. Ha Long Bay/ famous/ than/ Phu Quoc Island. =>____________________________________________________________________ 3. Mai/ never/ watch/ a 3D movie/ before. =>____________________________________________________________________ 4. Nam/ always/ have/ breakfast/ 6’ o’clock. =>____________________________________________________________________ 5. I/ like/ listen/ music/ free time. =>____________________________________________________________________

1) Hoàn thành bài tap : Dien thông tin thích hop vào cho trong : các đon vi chuc năng cua than ; de tao thành nuoc tieu ; ong đái ; be than ; bóng đái ; dan nuoc tieu ; nuoc tieu chính thuc ; ong đái. - Nuoc tieu đuoc tao thành o ........................................ - Bao gom quá trình loc máu o cau than ................................quá trình hap thu lai các chat can thiet , quá trình bài tiet tiep các chat đoc và chat không can thiet o ong than đe tao nên.................................... - Nuoc tieu chính thuc đo vào........................................qua ong..............................xuong tích tru o.................. roi đuoc thai ra ngoài nho hoat đong cua co vòng............................co bóng đái và co bung. GIUP MINH VS , MINH CAM ON NHA^_^

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