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manhnguyen572001
2 năm trước
Cho a>0 b>0 a2+b2=10 tìm giá trị nhỏ nhất 1/a2+1/b2
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TEST 1 I. Choose the correct answer for each sentence. 1.She (want / doesn’t want / wants) some vegetables. 2.We don’t want (some / any / a) cooking oil. 3.How (much / many / about) kilos of meat does she want? 4.Her sister doesn’t want (some / any / a) coffee. 5.(How many / How much) rice does she want? 6.(What / How much) is the price of a pound of butter? 7.My mother (cooks / is cooking / cook) the meals every day. 8.They need (some / any / a) soda for their party. 9.How (much / many / about) are these eggs? 10.Do you have (a / an / any) bananas? II. Finish the following sentences with “do / does / don’t / doesn’t” 1.I want some rice, but my friend ................................. . 2.Nam doesn’t like bananas, but I ................................ . 3.They don’t like chicken, but their mother ............................ . 4.My father likes coffee, but my mother ................................. . 5.I want some chicken and my sister .........................., too. 6.We don’t want brown pencils and they ..............................., either. 7.She has some toothpaste and so ......................... I. 8.He doesn’t want any eggs and neither .............................she. IV. Rearrange the sentences to make a meaningful dialogue. 1.How many do you want? A: 2.A bottle, please. B: 3.Thirty-four thousand dongs. A: 4.Can I help you? B: 5.Half a dozen eggs. Is there anything else? A: 6.Here you are. B: 7.How much do you need? A: 8.Yes, I’d like some eggs, please. B: 9.Thanks. How much are they? A: 10.Yes, I need some cooking oil. B: 11.Half a dozen, please. A: V. There is a mistake in each of the following sentences. Find and correct them. 1.How much rice and how many beef do you want? 2.She’s like a dozen of eggs and some vegetables. 3.Can you to go to the supermarket for me, Nga? 4.We need eight hundred gram of meat. 5.What would you like buying at the canteen? 6.How much is the price of this car? 7.Would you like some carrots? _Yes, I would. 8.I’d like a can soda. VI. Finish the second sentence so that it has the same meaning as the first. 1.How much is a bowl of noodles? _How much does 2.What is the price of a cake and an orange? _How 3.How much does a box of chocolate cost? _What 4.This box has twelve packets of tea. _There 5.How many apples do you want? _How many apples would 6.He goes to work at seven fifteen. _He goes to work at a VIII. Choose the best answer to fill in the blanks, then do the exercise below. American and Canadian families often (1)..................friends and relatives over for dinner. The guests usually(2)...................small gift like some flowers or a bottle of wine. Before dinner the family and the guests usually sit and talk together and (3)....................drinks. Then everyone (4)........................to the dinning table for dinner. At the end of the meal, everyone (5)........................dessert and coffee. After that the family and the guests (6)........................back to the living room and (7) ........................and talk some more. The guests usually (8)..............................around 10 pm. 1.a. have b. has c. invite d. invites 2.a. bring b. brings c. take d. takes 3.a. take b. drink c. have d. have got 4.a. move b. goes c. moves d. both b and c 5.a. eats b. drinks c. have d. has 6.a. come b. go c. turn d. all are correct. 7.a. sit b. stand c. lie d. kneel 8.a. go b. go away c. come d. leave

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