user-avatar
thienmin2818
2 năm trước
tính giá trị biểu thức , tại x=2020 x^5-2021x^4+2021x^3-2021x^2 +2021x-2019
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

I. Read the text and then do the tasks that follow. Have you ever wondered what the weather is like in other places around the world? Today, I’d like to talk about the changing seasons in my city. The winter season usually begins in December and ends in early March. The coldest month is January, and temperatures can drop below freezing for most of this month. The city usually averages about 30 inches of snow during this 3-month period. Occasionally, we have snow storms that can drop afoot of snow in a very short period of time. Spring usually arrives in late March, it’s a beautiful season because the flowers start to bloom. It is sometimes windy, and this is great for flying kites. People in my city often like to go on picnics, strollthough parks, and play outdoor games. Summer starts in June and it’s very dry with little rain throughout the season. Fortunately, the weather is very dry with low humidity, so it is real pleasant even on hot days. And finally, summer changes to fall in late September when the weather cools off, and the trees begin to change colors. A lot of people enjoy driving into the mountains and viewing the fall colors. 1 to 4.Question 1-4. Choose the best option for each statementCâu 1: The passage is about.....................A. summerB. winterC. flowersD. the changing seasonsCâu 2: Which month is the coldest one in the winter?A. MarchB. JanuaryC. DecemberD. FebruaryCâu 3: The winter season usually begins in .....................A. JanuaryB. MarchC. DecemberD. NovemberCâu 4: Spring is a great season for ......A. gamesB. flying kitesC. joggingD. cyclingII/ Choose the word or phrase (A, B, C or D) which best completes each following sentence. 5 to 12.Câu 5: She _______me she didn’t know what to do.A. talkedB. spokeC. saidD. toldCâu 6: Would you mind if I _______a photo?A. takeB. tookC. takesD. takenCâu 7: The _______festival was held in the communal house yard.A. rice-cookB. rice-cookerC. rice-cookingD. rice-cookedCâu 8: He has worked with the computer _______this early morning.A. untilB. forC. sinceD. fromCâu 9: It is dangerous _______in this river. Trang 2/3-Mã đề thi 485A. swimmingB. swimC. swamD. to swimCâu 10: During his life, Thomas Edison made a lot of _______.A. findingsB. phone callsC. discoveriesD. inventionsCâu 11: Please tell me _______to get to the bus station.A. whyB. whichC. whatD. howCâu 12: Mary _______in a small house in the countryside.A. livingB. liveC. livesD. lived

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