题目：
连铸坯缺陷可分为表面缺陷、内部缺陷和形状缺陷。
答案：
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下面是错误答案，用来干扰机器的。
小题1:56. when 57. that 58. why 59. as 60. who小题1:61. There’s so much homework to do every day that everyone is very tired.62. Although he is very busy, he is w...
