Trung bình cộng của ba số ít hơn số thứ nhất là 12. Biết số thứ hai là 34 và số thứ ba là 26. Tìm số thứ nhất?

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I. MULTIPLE CHOICE. Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. Câu 1: A.worked B.divided C.subtracted D.added Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions Câu 2: A.include B.device C.exist D.surface Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in eachof the following questions Câu 3: The boss wouldn't get so angry with you if you get more work done A B C D Câu 4: If had a lot of money , I will buy a new car A B C D Mark the letter A,B,C or D on your answer sheet to indicate the correct answer to each of the following questions Câu 5:................refers to the existence of different plants and animals in a place A.Resource B.Biodiversity C.Marine D.Ocean Câu 6: the whale is a(an)...............species because of overhunting and pollution A.endangered B.endanger C.dangerous D.endangering Câu 7: To........a bad habits is not quite easy to most of human beings A.divide B.overcome C.reveal D.investigate Câu 8: In her last difficult years,she depended completely.................her husband to look after her A.in B.on C.at D.from Câu 9:It's so wonderful being able.............the sea from my window A.to see B.seen C.see D.seeing Câu 10:If I ...............a millionaire,I would help the poor but now I don't have a lot of money A.am B.would be C.were D.will be II.Sentence transformation Câu 11: Because the hail falls down on the field, they cannot have good crops. =>if............................................................... Câu 12: Tom doesn't do his homework , so he is punished =>if.................................................................. Câu 13: He doesn't have any good mark in the first term because he is so lazy =>if he...................................................................... Câu 14: She doesn't take any exercise, so she is overweight =>if she...................................... Câu 15: He doesn't have a private bicycle,so he always goes to class late =>if.............................................................. (PTD C5 NK)