user-avatar
122091255895477
2 năm trước
Một hành khách đi bộ trên đoạn đường AB thấy: cứ 15 phút lại thấy một xe buýt cùng chiều vượt qua mình và cứ 10 phút lại có một xe buýt đi ngược chiều qua mình. Các xe khởi hành sau những khoảng thời gian như nhau, đi với vận tốc không đổi và không nghỉ trên đường. Vậy sau bao lâu có một xe rời bến?
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Read the following passage and choose the option (A,B,C or D) that answers each of the questions below One of the most obvious negative aspects of social networking is losing Face -to-face contact with other people.Teens are sitting around with their hands all day long, tapping messages onto screens instead of communicating with real people .Many teenagers feel more comfortable with virtual friends than with real ones.The majority think that it is easier to chat on the Internet because they lack communication skills. It is also true that parents often have no knowledge about what their kids do with their phones or computer. Crosby says that,"While kids are plugged in to social media , only about 40% of parents are involved themselves." And because parents don't know the full picture , thay also don't know how to deal with a teenager's potential overuse of social media and might not even be aware that a problem exists.Therefore , social networking can be much more immediately engaging with the teenager 's life than parents are , and this fact makes virtual commmunication feels more "real" than face-to-face communication 41.What is the main idea of the passage? A.Parents should use social networks more to understand their children B.Students are using social networks too much C.Social networking brings negative effects to student's face communication D.Virtual life is easier than real life 42.What do most teenagers think about chatting on the Internet? A.Chatting on the Internet is easier than talking with real people B.Chatting on the Internet is more difficult than talking with real people C.Chatting on the Internet is funnier than talking with real people D.Chatting on the Internet is more boring than talking with real people 43.The percentage of 40% refers to A.The number of parents who let their children use social media B.The number of parents who do not want their children to use C.The number of parents who use social media D.The number of parents who do not use social media 44.Which sentence is not true according to the passage ? A.The majority of teenagers find it easier to communicate with virtual friend B.The majority of teenagers lacks communication skill C.The majority of parents know how to use social media with their children D.The majority of parents do not know how to deal with their children overuse of social media

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