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ook the same, and in some ways, they look different. Ann is as tall as Anna, and she has longer hair than Anna. Anna is more outgoing than Ann. They both have a lot of beautiful clothes, but Ann’s clothes are much cooler. They are in the same school and are both good at schoolwork, thought Ann’s schoolwork is better than Anna’s. The keys to Unit7 一、 二、 tell 7. to see 9. more outgoing 三、 1115. DCBAC 16— 20 DCCCB 四、 for drink to popcorn did do on on life to 五 、 六 、 36— 40 c h a d f 七 、 43. showed 44. smoking 45. will be 46. smoking 47. know 48. do 49. smoking 50. will see 八 、 51— 55 .DBCCB A A 九 、 6165. C D B A C 6670. B C D B A 71. Butter, cheese, potatoes, fish, vegetables and grain. 72. 2,500 calories 73. Half as much 74. 18 times 75. Fresh fruits and cheese. 十、 My hobby is collecting stamps. I’ve been collecting stamps for about three years. I have thousands of stamps from most countries of the world. Sometimes I take used stamps off letter envelopes, but mostly my father and my friends bring them back from travels as souvenirs. Some of the stamps in my collection are very valuable. I think collecting stamps is very interesting. Though collecting stamps, I get all kinds of information. I have learned a lot. The keys to unit 8 一、 15 BCDDA 610 BCBCC 1115 BBDBC 1620 BADBD 二、 21. advice 22. classes 23. gift 24. aquarium 26. petition 27. outdoor 28. autograph 三、 else 32. had fun 33. How was 34. How many sandwiches 35. didn’t meet 四、 , hanging, out 37. monitor, sleeping, late 38. got, wet 39. end ,of