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: Tại sao khi làm thí nghiệm về “sự nở vì nhiệt của chất khí” ta chỉ cần xoa hai bàn tay vào nhau cho ấm rồi áp tay vào bình đã quan sát được sự nở vì nhiệt còn đối với chất lỏng ta phải đặt bình cầu vào nước nóng mới quan sát được sự nở vì nhiệt?
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Read the following passage and mark the letter A, B, C or D to indicate the correct word or phrase that best fits each of the numbered blanks. Have you ever stopped (31)……… why people give each (32)……….. eggs at Easter ? - The Christian festival of Easter celebrates the return of Christ from the dead, but the festival is actually name (33)……….. the goddess of the sun, Eostre, whose name is taken from the East where she (34)……….. In very ancient times, Easter was a celebration that winter was (35)……… and that a new life was about to begin. 31 A. to wonder B. wondering C. wonder D. wander 32 A. else B. person C. others D. other 33 A. for B. about C. after D. with 34 A. goes B. sets C. rises D. raises 35 A. finish B. conclusion C. up D. over IX. Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of the questions. During the teenage years, many young people can at times be difficult to talk to. They often seem to dislike being questioned. They may seem unwilling to talk about their work in school. This is a normal development at this age, though it can be very hard for parents to understand. It is part of becoming independent of teenagers trying to be adult while they are still growing up. Young people are usually more willing to talk if they believe that questions are asked out of real interest and not because people are trying to check up on them. Parents should do their best to talk to their sons and daughters about school work and future plant but should not push them to talk if they don't want to. Parents should also watch for the danger signs: some young people in trying to be adult may experiment with drugs, alcohol, or smoking. Parents need to watch for any signs of unusual behaviour which may be connected with these and get help if necessary. 36.This passage is taken from a A. handbook for parents B. school timetable C. teenage magazine. C. book for children 37. Why do adults sometimes find teenagers difficult to talk to. A. because most teenagers dislike being questioned. B. because teenagers don't want to talk to other people. C. because teenagers think adults are not honest D. because most teenagers hate adults. 38. When can you expect young people to be more talkative than usual. A. When people talk to them because they are really interested and not just checking on them. B. When adults give them a lot money to spend. C. When adults talk to them about something other than their work in school. D. When adults talk to them about sex, alcohol and drugs. 39. Some teenagers experiment with drinking bad smoking because A. cigarettes and alcohol are available everywhere. B. cigarettes and alcohol are cheap C. women like smoking and drinking men D. they regard them as a mark of adulthood 40. The word BEHAVIOUR in the passage most nearly means A. feeling B. manners C. activities D. questions

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