user-avatar
boiduonganh720202021
2 năm trước
Có hai chiếc đồng hồ. Trong một ngày, chiếc thứ nhất chạy nhanh 10 phút, chiếc thứ hai chạy chậm 6 phút. Cả hai đồng hồ lấy lại theo giờ chính xác. Hỏi sau ít nhất bao lâu, cả hai đồng hồ lại cùng chỉ giờ chính xác.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I. Circle the word with the underlined part pronounced differently from that of the others. 1. A. teacher B. cheap C. appear D. easy 2. A. evening B. key C. secrete D. envelope 3. A. decorated B. installed C. described D. covered III. Circle the best option A, B, C or D to complete each sentence. 1.I ..........................................with my aunt when I go to Ha Noi next summer. A.stay B. Staying C. stayed D. will be staying 2.“When is your math exam?” - “Well, at this time tomorrow, I .........................................for it.” A.will sit B. will be sitting C. sit D. is sitting 3.You'll recognize Jenny when you see her. She ......................................a red hat. A.wears B. is wearing C. will wear D. will be wearing 4.Do you spend a lot of time ......................................to music? A.listen B. to listen C. listening D. to be listening 5.How many times have I told you ...................................... football in the street? A.not to play B. do not play C. not playing D. will not play 6.I don’t mind up ......................................early in the morning. A.get B. to get C. getting D. to getting 7.It was nice of her to let me......................................her laptop. A.borrow B. to borrow C.borrowing D. to borrowing 8.She is looking forward ......................................her grandparents again soon. A.see B. to see C. seeing D. to seeing VII. Choose the best answer. When you come to the countryside of Vietnam, especially in Hue, you can see a lot of beautiful girls with a palm leaf (1)__________ hat on. The conical leaf hat is said the symbol of the Vietnamese (2)__________.The hat is made (3)__________ a special kind of bamboo and young and soft palm leaves. The ribs are shaped into a conical form. The diametre of the hat is usually about between forty and fifty-five centimetres; and it is about twenty-five or thirty centimetres high. The ribs are covered with palm leaves which are tightly stitched onto the bamboo frame. Finally, the hat is usually (4)__________ with a coat of furniture - polish oil. The palm leaf conical hat is mainly used to protect from shine or rain. Beneath the broad rim of the hat do Vietnamese girls look more (5)__________ and charming? 1. A. cone B. conical C. conically D. conicity 2. A. culture B. nation C. hat D. flag 3. A. with B. to C. from D. in 4. A. drawn B. written C. painted D. covered 5. A. attract B. attractive C. attraction D. attractiveness

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