a) Cho tứ giác ABCD có các tia phân giác của góc A, góc B vuông góc với nhau. Chứng minh rằng ABCD là hình thang. b) Chứng minh rằng trong một hình thang các tia phân giác của hai góc kề một cạnh bên vuông góc với nhau.

nhờ đâu mà loài vật đa dạng về môi trường sống?

IV. Write the instructions to make lemon iced tea (tra chanh), using the words or phrases given, and words showing sequence (first, second, next, then, after that, finally). Ingredients: - tea bags (You can use any kind of tea you love: lotus tea, Lipton tea, or dried tea leaves). - lemon, sugar, ice. Process: 1. put/ tea bag/ small cup/ then/ pour/ slowly/ boiled water/ it. _______________________________________________________________________________________ 2. wait/ 5-7 minutes/ then get/ tea bag/ out. _______________________________________________________________________________________ 3. cut/ lemon/ half/ then/ press/ water/ from it/ not/ use/ seeds. _______________________________________________________________________________________ 4. add/ sugar/ and/stir/ mixture/ then/ add/ ice. _______________________________________________________________________________________ 5. your drink/ already/ served/ pour/ it/ glasses. _______________________________________________________________________________________ 6. decorate/ sliced lemon/ basil leaves/ surface of drink. _______________________________________________________________________________________

III. Read the passage carefully, and then do the following tasks. The healthy eating diet Healthy eating is about feeling great and having more energy. If you choose the right foods, your healthy diet will be a tasty diet, too. You can still enjoy your favourite sweet and salty foods, but too much sugar and salt is bad for your body. Dairy products like milk, cheese, and yoghurt are great because they contain calcium and keep your teeth and bones healthy. You should choose low-fat dairy products. Meat, fish, eggs, beans, and nuts are important, too. They keep our bodies healthy and they give us energy to work and play. Whole grains are an important part of every meal. If you eat lots of whole grains, you will have a healthy heart. Whole grains are in bread, cereal, pasta, and rice. Dark bread and brown rice are great sources of whole grains. Fruit and vegetables are the most important part of a healthy diet. They are low in calories and full of vitamins. Eat lots of fruit and vegetables with every meal, and as snacks during the day. Fruit and vegetables with darker colours have more vitamins. A. Find the underlined words in the text to match the meanings. 1. _______________: an amount of energy. 2. _______________: the power that your body gets from food. 3. _______________: food that you eat between meals. 4. _______________: If food is this, it tastes of sugar. 5. _______________: If food is this, it tastes of salt. 6. _______________: the types of food that you eat most often. 7. _______________: things in food that we need to grow and be healthy. 8. _______________: the place where you get something from. B. Answer the following questions. 1. What does the healthy eating diet help you? _______________________________________________________________________________________ 2. What can you also enjoy when you have a healthy eating diet? _______________________________________________________________________________________ 3. Why are dairy products good for your health? _______________________________________________________________________________________ 4. What is the function of meat, fish, eggs, beans and nuts? _______________________________________________________________________________________ 5. Why are whole grains an important part of every meal? _______________________________________________________________________________________ 6. What types of foods can we get whole grains from? _______________________________________________________________________________________ 7. Why are fruit and vegetables the most important part of a healthy diet? _______________________________________________________________________________________ 8. What types of fruit and vegetables have more vitamins? _______________________________________________________________________________________

giupspppppppppppppp vớiiiiiiiiiiiii

cần gấp nha giúp mik nhanh, hứa vote 5 sao và ctlhn

II. Match the two parts of the sentences, and write the answers (a-h) in the blanks ______ 1. How much a. food at the party? ______ 2. There’s a lot b. onions. ______ 3. There aren’t many c. orange juice ______ 4. How many d. of tomatoes in this salad. ______ 5. We don’t have much e. milk do we have? ______ 6. Was there much f. strawberries in the garden? ______ 7. There are a lot g. of ham on this pizza. ______ 8. Are there many h. potatoes do you want?

tìm giá trị của x để biểu thức Q=x^2-2x+7 có giá trị nhỏ nhất

Giúp mình bài này với ạ Hỗn hợp gồm Al và Mg có khối lượng là 3.54 gam được chia thành hai phần bằng nhau: Phần 1: cho tác dụng với HCl dư thu được 1.904 lít khí H2 (đktc). Phần 2: Hòa tan trong HNO3 loãng dư thu được hỗn hợp khí gồm NO và N2O có tỉ lệ mol là 1:2.

Giúp mình với ~~~ Although the city seems to have a lot of great things, the country can offer as (1)_________ satisfaction as well. The country is a marvelous place to live in. It offers a very relaxing feeling, and it is filled (2)_________ magnificent views and scenery. Rural towns offer more open space than cities and aren’t overcrowded. The country can also maybe help you become a more independent and (3)_________ person. You can buy a small piece of land, plough it and put some (4)_________ in order to grow your own vegetables. This way you (5)_________ your own crops, and eat and live in a very healthy way. (6)_________, being in the countryside makes you more of an outdoor person often enjoying the voices and wild places of nature. Not everyone is (7)_________ to the city life and not everyone has the desire to live permanently in the countryside. It is a matter of perspective and personal point of (8)_________. 1. a. most b. more c. much d. many 2. a. in b. out c. up d. with 3. a. active b. idle c. passive d. quiet 4. a. weeds b. seeds c. breeds d. branches 5. a. collect b. damage c. complete d. rotate 6. a. By contrast b. However c. Therefore d. In addition 7. a. Interested b. bored c. suited d. excited 8. a. care b. view C. contact d. way