trinh bay cach sap xep lap luan cua tac gia bang so do trong bai chieu doi do

Kết quả của phép tính 91,08:3,6 là

9kg 148g= ? kg 17kg 43g =? kg 91 tấn 5 tạ =? tấn 7 tấn 63 yến =? tấn 4 tấn 213 kg = ? tấn

2. Complete the story. Minh is very (1) ……….And Dr Lai (2) ……………. at Minh and tells him not to worry. She explains one of his teeth has a (3) ………….. He has to (4) …………. them regularly. After Dr Lai fills his tooth, Minh leaves. He is very (5) …………………….

x^4(3x^3-3x+4/5) nhân đơn thức với đa thức

Exercise 2: Choose the correct answer A, B, C or D: (6pts) 1. Water _______ in the lake has made the fish die. A. pollution B. pollute C. polluted D. polluting 2. Three hundred people were left _____ by the earthquake. A. home B. property C. homeless D. house 3. The train to Ha Noi ______ at 7a.m tomorrow. A. leaves B. leaving C. to leave D. left 4. Environmental pollution has _____ to lots of health problems. A. caused B. got C. made D. led 5. Singapore is famous for its __________ and green trees. A. cleanly B. cleanliness C. cleaning D. clean 6. In some English speaking countries, turkey and pudding are ______ food at Christmas. A. national B. historical C. traditional D. possible 7. If there ……..so much light in the city at night, we could see the stars ______ A. weren’t-clear B. wasn’t-clearly C. was-clear D. were-clearly 8. We will save thousands of trees if we _______ waste paper. A. aren’t B. won’t C. don’t D. didn’t

Bài 7. Cho góc nhọn xOy, lấy điểm A nằm bên tron góc đó. Vẽ AB vuông góc với Ox ở B; BD vuông góc với Oy ở D; AC vuông góc với Oy ở C; CE vuông góc với Ox ở E. OA cắt DE tại K. a) Chứng minh hai tứ giác ABOC và BCDE nội tiếp. b) BCO bằng những góc nào? c) Chứng minh: OA DE ai giúp mk vs ...mk cần gấp lắm ạ!!

Tiến hành nuôi cấy một chủng vi khuẩn E.coli trong đĩa petri A và B có môi trường nuôi cấy gồm các chất dinh dưỡng giống nhau. Đĩa A bổ sung thêm axit amin tryptophan còn đĩa B thì không có mặt axit amin này. Để hai đĩa trong cùng một điều kiện, sau 24 giờ lấy ra quan sát thấy đĩa A vi khuẩn sinh trưởng, tạo khuẩn lạc còn đĩa B thì không thấy sự sinh trưởng. Hãy giải thích nguyên nhân.

1........are the balls?_They are.......the room. 2.my/ country/ big /house /is/ and /nice /in/ It /is /the. 3.She/have/dolls?_No/doesn't. 4.There /a pen/two books/desk. 5.....................? My books are in the bag. 6...........................? There are two pens over there. 7.........................? Yes,my mother is a teacher. 8..........................? No,there are two erasers in the box. 9................................? My house?It's in the village.

1. A(n) .............. is a family that consists of parents and children. 2. ............. is the care of children, especially while parents are at work. 3. A(n) ........... is the difference in attitudes or behaviour between younger and older age groups, which can cause a lack of understanding. 4. .........are the rules of behaviour that are typically accepted while people are eating at a table. 5. A(n) ................is a person's opinion about a subject. 6. A(n) ............is a big family that includes not only the parents and children, but also grandparents, uncles, aunts and cousins, all living under the same roof.