Từ một phép lai giữa 2 cây người ta thu được: 120 cây thân cao, hạt dài; 119 cây thân cao, hạt tròn; 121 cây thân thấp, hạt dài; 120 cây thân thân thấp, hạt tròn. Biết hai tính trạng chiều cao thân và hình dạng hạt di truyền độc lập nhau, thân cao và hạt dài là tính trạng trội. Giải thích kết quả để xác định KG, KH của bố mẹ và lập SĐL. cần gấp

Phân tích thành nhân tử pp dùng nhân tử chung

giúp với ạ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

1. Tìm các ước chung của hai số n + 3 và 2n + 9 với n ∈ N.

II. Read the passage carefully. MY VILLAGE I live in a village by Mekong River. Every day, like most of my friends, I walk to school. It is three kilometers away. After class, I often help my mother to collect water from the river and feed the chickens. At the weekend, the villagers often gather at the community hall where there is a TV. The adults watch TV, but more often they talk about their farm work and exchange news. The children run around playing games and shouting merrily. Laughter is heard everywhere. My father sometimes takes me to the market town nearby where he sells our home products like vegetables, fruits, eggs... He then buys me an ice cream and lets me take a ride on the electric train in the town square. I love those trips. On starry nights, we children lie on the grass, looking at the sky and daring each other to find the Milky Way. We dream of faraway places. Answer the following questions. 1. Does the boy like riding on the electric train in the town square? 2. What do the children do on starry nights? 3. Do you like to live in the countryside or in the city? Why?

giúp mình bài false true với mn ơi hứa vote thank (ảnh hơi dài mn kéo xuống để xem hết nhé)

Ex 4: Bài tập viết lại câu 1. “I walked home after the event,” Tom said. ➔ __________________________________________________________. 2. “Do you enjoy listening to music?” Bin asked her. ➔ __________________________________________________________. 3. She said to me “Can you speak Vietnamese?” ➔ __________________________________________________________. 4. “I don’t like this red cap,” she said. ➔ __________________________________________________________. 5. He said to me “I haven’t finished my work”. ➔ __________________________________________________________. 6. “I must go home to make the dinner”,said Linda. ➔ __________________________________________________________. 7. “I have just received a postcard from my aunt,”my best friend said to me. ➔ __________________________________________________________. 8. “Do your sister and brother go to the same school?” Nam asked his friend. ➔ __________________________________________________________. 9. ”Give him a smile,”The photographer told him. ➔ __________________________________________________________.

Mn giúp em vs em cần gấp Lm đầy đủ các bước Em cảm ơn ạ

10. “Don’t discuss this question now,” said my teacher to us. ➔ __________________________________________________________. 11. “If the weather is fine, I will go on a picnic with my friends,” she said. ➔ __________________________________________________________. 12. “What would you do if you had three days off ?” I asked him. ➔ __________________________________________________________. 13. “If you had listened to my advice, you wouldn’t have made such a big mistake.” Julia said to LiLi. ➔ __________________________________________________________. 14. “I’m sure she will help you if you ask her.”, he told me. ➔ __________________________________________________________. 15. “I will be surprised if Mary doesn’t pass the exam.”, our teacher said. ➔ __________________________________________________________.

Một ca nô xuôi dòng từ A đến B rồi lại ngược dòng từ B về A với vận tốc bằng 45km/giờ. Tính quãng đường AB biết vận tốc dòng nước bằng 5km/giờ và thời gian ngược dòng nhiều hơn thời gian xuôi dòng là 24 phút.