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tientb2.2003
2 năm trước
Khử 24g axit của 1 kim loại hóa trị 2 thì cần dùng hết 6,72g l khí H2 ở đktc thu được kim loại và nước . Xác định kim loại , cthh của oxit
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Question I: Choose the word that has the underlined part pronounced different from the other (1pt) 1. A. accept B. activity C. across D. afraid 2. A. boat B. cow C. grocer D. grow 3. A. display B. drive C. exciting D. idea 4. A. amusing B. cousin C. homesick D. season Question II: Choose the best answer (2pts) 1. The ao dai is usually made of a light................. A. cotton B. design C. symbol D. material 2. They................. in Hue................. a long time. A. were living/ for B. were living/ since C. have lived/ for D. have lived/ since 3. These plants .................................. for animals' food. A. can grow B. can be grown C. have grown D. grow 4. Japanese people usually wear kimonos on special ......................... A. occasions B. times C. situations D. places 5. He used to ...................................................... to school by his mother. A. take B. taking C. taken D. be taken 6. They wish they .............................. a new house now. A. have B. had C. will have D. would have 7. It rains heavily, ........................................ I can't go to the movies with you. A. and B. but C. because D. so 8. He asked me where I ................................ the next day. A. go B. went C. will go D. would go Question III: Using the correct tense of the verbs to complete the sentences. (2 pts) 1. Lan (eat)..............................................................dinner when his friend called. 2. She rarely (get) ............................................. home before six o'clock. 3. We (not/ begin) ............................... to study for the test yet. 4. They (see) .................................................................. this movie before. 5. My friend is a writer. She (write) .............................................. many books. Question IV: Use the words given to fill in the blanks. There is one extra word that you do not need to use (2 pts) down – air – quickly – about – save - dirty – important – pollute – grow We all are destroying the Earth. The seas and rivers are too (1) .......................... to swim in. There is so much smoke in the (2) ................................ that it is unhealthy to live in many of the world's cities. In one well-known city, for example, poisonous gases from car (3) ............................. the air so much that policemen have to wear oxygen masks. We have cut (4)......................... so many trees that there are now vast areas of wasteland all over the world. As a result, farmers in parts of Africa can not (5) ......................... enough to eat. In certain countries in Asia there is so little rice. Moreover, we do not take enough care of the countryside. Wild animals are (6) ............................. disappearing. For instance, tigers are rare in India now. Because we have killed too many for them to survive. However, it is not so simple to talk (7) .............................. the problem. We must act now before it is too late to do anything about it. Join us now. (8) ..................the Earth.

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