Trong lịch sử phát triển của loài người đã có những phát minh vĩ đại. Bảng dưới đây cho biết tên và năm công bố một số phát minh. Hãy đọc bảng và cho biết từng phát minh được công bố vào thế kỉ nào.

Các câu hỏi liên quan

Giúp em với ạ, phần IV thôi cũng được ạ Em vô cùng cảm kích VI. Write a letter to complain about the noise. 1. I/ write/ this letter/ complain/ noise from Apartment 3C 2. I/ move into/ Apartment 2C/ November 1st 3. Since/ I move in/ my upstairs neighbors/ play/ stereo/ loudly/ night 4. I/ ask/ them/ turn it down/ several times already. 5. However, they/ not stop/ the noise yet. 6. I/ be/ a student/ and/ study/ every night 7. I/ fail/ final exam/ next month/ unless/ this noise/ stop 8. please talk/ my neighbors/ and ask/ turn down their stereo/ 9:00 9. I/ look forward/ hear/ you/ and see/ how/ you/ solve/ problem/ Sincerely/ Lan V. Change the following indirect sentences into direct statements. One example has been done for you. 0. I said that I was fine. -> I said: "I'm fine". 1. The teacher told his students that he would be busy the following month.  ………………………………………………………………………………………………………………… 2. Mm told me that she was sad then.  ………………………………………………………………………………………………………………… 3. One of my friends said that he liked learning English with his teacher.  ………………………………………………………………………………………………………………… 4. The doctor told me that I could leave the hospital that day.  ………………………………………………………………………………………………………………… 5. The landlady told me that I could use those bed covers.  ………………………………………………………………………………………………………………… 6. The gardener said that those flowers were not very fresh in that garden.  ………………………………………………………………………………………………………………… 7. The stamps collector said that he would attend a stamp contest the following year.  ………………………………………………………………………………………………………………… 8. The film director said that she will not willing to work then.  …………………………………………………………………………………………………………………