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ngocbaobui1705
2 năm trước
hãy tính khối lượng của những khí sau: a/có tỉ khối với khí nitơ :2;2,857;2,07 b/có tỉ khối với không khí:2,45;0,965;2,20
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21/. However it still has _________________ from the burns today. A. black spots B. yellow check C. black shape D. black stripes 22/. Because there’s a supermarket near my house, my mother can do her shopping ______________. A. to foot B. on feet C. on foot D. with the feet 23/. Tom looks _________________ his father. A. as B. same as C. like D. same like 24/. Those shoes look very tight. Do they really ________________ you? A. fit B. match C. go with D. measure 25/. She _______________ every day for the love of it and she also teaches dancing. A. is dancing B. danced C. dances D. has danced 26/. Although she worked late ________________ night, she woke up early the following morning. A. at B. through C. in D. into 27/. The skirt you have bought is different ________________ mine. A. to B. from C. with D. as 28/. Tom _______________ drink a lot of coffee when he was a student. A. used B. used to C. get used to D. was used to 29/. Do you need any help? _ “________________.” A. Yes. That’s very kind of you. C. No. Thank you. I’m fine. B. I’m sorry. I don’t help you. D. A and C. 30/. May I help you? _ “_________________.” A. Yes. Thank you. C. No problem. B. Of course. D. What do you say?

III/. Choose the correct answer by circling A, B, C or D. 11/. The farmer said that he had something called _______________ but he left it at home. A. wise B. intelligent C. interesting D. wisdom 12/. When he returned, he brought some ________________, the dried stems of grain plants. A. hay B. grass C. straw D. leaves 13/. She asked her children _______________. A. to stop playing B. stop to play C. stop playing D. to stop to play 14/. He ________________ us not to play football in the garden. A. advise B. tell C. recommend D. warned 15/. She advised her children ______________ much time playing games. A. don’t spend B. not spend C. haven’t spent D. not to spend 16/. I know you worked really _______________ this semester. A. hard B. hardly C. hardest D. harder 17/. The policeman _______________ her to give him the visa. A. begged B. advised C. asked D. warned 18/. He lit the straw and the fire ________________ the tiger. A. flamed B. burned C. stroke D. beat 19/. The tiger was frightened and tried _______________. A. to free B. to go C. to run D. to escape 20/. The tiger succeeded in _________________ from the farmer. A. going B. getting C. running away D. freeing

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