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dohanvietnam
2 năm trước
a)Tìm các số có dạn 14a8b .Biết sô đó chia 7 và 8 đều dư 2 b)Cho các phân số 5/9;7/13;11/20.Tìm 3 phân số (có tử mẫu dương) theo thứ tự bằng 3 phân số trên sao cho hiệu đó có giá trị nhỏ nhất c)Chứng minh rằng với mọi stn n > 1 thì 7.......7 + 2n chia hết cho 9 n c/s 7
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IV.Choose the best option to complete the passage. It’s Sunday morning. The Browns are sitting in (1)……… living room. They are talking (2)…….. the dinner this evening. David likes beef and Susan does, too. He says that beef (3)……..good for childen. Their father, Mr. Brown, prefer chicken to beef. He asks his wife to buy (4)…….. for him. Helen, their youngest daughter doesn’t want any meat .She would (5)……….. cakes and sweets. Mrs. Brown doesn’t like beef. She doesn’t like chicken, either. She likes fish, vegetables and fruit. She says that fish and vegetables (6)…………. good for old men and every body (7)………. to eat fruit. At last they decide to go out (8)…….dinner (9)………..Mrs. Brown says that she can’t cook so(10)…………food for every body in the family. 1.A. the B.a C.an D. to 2. A. with B. for C. about D. to 3.A . are B. has C. does D. is 4. A. little B. some C. any D. none 5. A. like B. likes C.have D. has 6. A. is B. have C.are D. do 7. A. need B. needs C. are D. have 8. A. to B.of C. with D. for 9. A. because B. but C. so D. and 10. A. many B. little C. much D. lots of

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