推荐回答（1个）
Unit 2 29. number 数字 30. instruction 指示 31. check 检查，核实 32. gram 克 33. son 儿子 34. chess 国际象棋 35. India 印度36. wise 充满智慧的 37. challenge 向（某人）挑战 38. promise 许诺，承诺 39. prize 奖赏，奖品 40. grain 谷粒 41. chessboard 国际象棋 42. double 加倍 43. amount 数量，数额 44. rest 剩余部分 45. gold 金子，黄金 46. instead 代替，顶替 47. realize 认识到，意识到 48. copy 抄写 49. correctly 准确无误地，正确地 50. accident （交通）事故 51. challenge to 向（某人）挑战 52. and so on ......等等 53. copy down 抄写
如果回答有不完善的地方，或不明白的地方，可以追问
希望采纳
谢谢！
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