tìm các điểm cực trị của hàm số sau:y=$x^{3}$ $(1-x)^{2}$

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Đề kiểm tra: I. Choose the best answer 1. It is interesting _____________ tree leaves from different countries. A. collecting B. to collect C. collect D. collects 2. My dad enjoys ________ his bike to work. A. to ride B. ride C. rides D. riding 3. I love cooking, _________ my sister doesn’t. A. because B. so C. but D. and 4. Laughing is good _______ your health. A. for B. to C. with D. of 5. Choose the word that has the underlined part pronounced Đề kiểm tra 15 phút Tiếng Anh 7 Thí điểm Học kì 1 có đáp án (Đề 1) | Đề thi Tiếng Anh 7 có đáp án A. dear B. pear C. earn D. heart 6. Choose one mistake and correct it. I find carve eggshells boring because it takes a lot of time to complete one shell. A B C D II. Put the verbs in the correct form 1. I enjoy (fish) ____________ because it (be) ________ relaxing. 2. Jane will play chess after she (finish) ____________ school. 3. What ________ your mother often (do) _____ at weekends? 4. I think people (not play) ________________ individual games in the future. 5. We find (arrange) ____________ flowers interesting because it (help) ____________ us relax. 6. I (not collect) ________________ dolls when I grow up. III. Complete the passage with the words given bought competition singing there on English Mary’s hobby is singing. She enjoys (1) ________________ very much. When her brother (2) ____________ a karaoke set last month, Mary was so glad that she sang every day after dinner. She likes to sing only (3) ____________ songs. In fact, she has already sung all the songs found (4) ________ the karaoke discs. Minh is singing in the karaoke (5) _______________ organized by the RC Center this Saturday. Her family is going (6) _____ to support her. IV. Write the right sentences with given words: 1. How/much/water/do/those trees/need? → _________________________________________________________? 2. How/eggs/there/the fridge? → _________________________________________________________? 3. How/homework/you/have? → _________________________________________________________? 4. How/potato/your grandfather/grow/the garden? → _________________________________________________________? 5. How/lights/there/along the street? → _________________________________________________________? 6. How/flour/this bread/need? → _________________________________________________________?