user-avatar
150058776576717
2 năm trước
Tính giá trị của biểu thức : (11 29/31-3 7/8) - (2 28/31- 4) Ở chỗ 11 có dấu cách sau đó mới đến số 29 vì đây là hỗn số. Tương tự ở chỗ 2 38/31 cũng như vậy sau đó mới trừ 4 ak (đừng lấy 31-4)
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

6.At this time next week we ……………..to work to support the air pulltion cutting down campaign. * A.will cycle B.will be cycled C.are cycling D.will be cycling 7.A jet pack doesn’t ........a lot of space. * A.occur B.bring C.take D.have 8.We will cut down on the use of natural gas because it is …………..and harmful to the environment * A.plenty B.limited C.available D.abundant 9.You can use a jet pack to ……………anywhere easily * A.drive B.sail C.ride D.fly 10.We will use more ...........energy in the future * A.sun B.sunny C.solar D.sunlight 11.A sky safety system can help cars to ......traffic jams and crashes. * A.use B.have C.avoid D.take 12.Solar panels........outdoors to capture sunlight and transform it into electricity * A.will place B.will be placing C.will be placed D.will have placed 13.It will be ......to ride a jet pack in bad weather because it doesn’t have a roof * A.comfortable B.pleasant C.unpleasant D.enjoyable 14.Do you think renewable energy..........fossil energy before 2030? * A.will replace B.is replacing C.will be replacing D.will be replaced 15.We are looking for types of vehicles that help us to avoid .............. * A.walking B.traffic jams C.rush hours D.trafic 16.Nuclear energy is ………….., but it is dangerous * A.renewable B.non renewable C.nutural resource D.fossil fuel 17.Using solar panels at home can help ....... your electric bill and your carbon footprint * A.recude B.increase C.provide D.convert 18.Wind power is the most promising source of energy * A.non renewable B.natural C.limited D.alternative 19.Solar and wind.....instead of fossil fuels within 20 years? * A.are used B.will be used C.will use D.will be using 20.If we reduce the energy we use, we.......... money * A.are saving B.will save C.will be saved D.will be saving giúp Mk vs ạ Cám Ơn mọi người nhìu

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team