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2 năm trước
Hòa tan hoàn toàn 4 gam hiđroxit của kim loại X hóa trị I cần dùng 50ml dung dịch HI 2M. Công thức của hiđroxit là(Cho H=1; Li=7; Be=9; O=16;Na=23; Mg=24; Al=27; K=39; Ca=40; Rb=85; Fe=56; Cu=64; Zn=65; Ag=108; Cs=133; Ba=137) A.LiOH B.NaOH C.KOH D.CsOH
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I. Choose the word or phrase that best fits the blank:(2pts) 1. My village festival........................on january 8th. A. held B. hold C. is going to hold D. is held 2. We are looking forward..................................you in June. A. to see B. to seeing C. seeing D. to be seen 3. English..................................in many countries in Asia. A. speaks B. is speaking C. is spoken D. has spoken 4. I can see a boy.................... a water buffalo. A. ride B. riding C. to ride D. rode 5. Would you mind closing the window? + ................ A. No, I’m afraid not B. No, of course not C. No, I can D. I’d rather you didn’t 6. She cried ........................ when she heard that news. A. exiting B. excitingly C. excited D. excitedly 7. My sister likes sweet....................... from chocolate. A. making B. made C. to make D. that make 8. Cool the burn immediately so as to ........................ tissue damage. A. ease B. relieve C. minimize D. maximize 9. We should use cloth bags........................... of plastic bags. A. instead B. besides C. apart D. without 10. In the world, millions of old papers........................away every day. A. thrown B. are throwing C. are thrown D. threw II. Give the correct form of the verbs in brackets.(3pts) 1. The house ( build ) ……………………………….for six months. A. has built B. building C. was built D. has been built 2. Do you mind (tell)………………………me her address? A. to tell B. telling C. tell D. told 3. Would you mind if he ( come ) …………….here with me? A. comes B. cames C. came D. coming 4. I’m wearing the dress ( buy) ……………………………by my mother. A. bought B. was bought C. buy D. buying 5. Who (look) …………… after the dog when you (be) …………… away last week? A. looks/ were B. looked/ were C. looked/ was D. looking/ were III. Choose the word whose underlined part is pronounced differently from that of the others.(2pts) 1. A. down B. throw C. nowadays D. how 2. A. plants B. fields C. trees D. newspapers 3. A. include B. prison C. trip D. decide 4. A. head B. beach C. weather D. heavy

VII. Give the correct form of the verbs in the brackets to complete the sentences 16. Ted and Amy ( marry)_______ for 24 years. 17. Fred ________ answer) the phone if his wife ( have)________ a bath. 18. If Claire _______(wear) this dress at the party, our guests ________(not/ stay) any longer. 19. They ________(not survive) in the desert if they _______(not/ take) extra water with them. 20. You _______(cross) the Channel if you ________( fly) from Paris to London. 21. I ________(remember) you if you ________(give) me a photo. 22. If you ________(press) CTRL+S, you _______( save) the file. 23. He ________(not/understand) you if you (whisper)_______. 24. If we _______(send) an invitation, our friends ________( come) to our party. 25. At last the bus came. We ( wait)________ for half an hour. 26. I'm feeling sick.I (eat)________ so much chocolate last night. 27. If I ________(touch) this snake, my girlfriend _________(not scream). 28. I think the weather (be)_______ nice later. 29. I (turn)________ the dishwasher on when heard the shot. 30. She ________(forget) to pick you up if you _________(not phone) her.

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