问题
单项选择题
锻件中的白点是在锻造过程中哪个阶段形成的？（）
A.加热
B.形变
C.成型
D.冷却
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
锻件中的白点是在锻造过程中哪个阶段形成的？（）
A.加热
B.形变
C.成型
D.冷却
参考答案：D
Li Lei gets an e-mail 16Jackson Wilson. Jack is a student in Canada. He wants to 17 Chinese. Dear friend, My name is Jack Wilson. I am from Toronto, 18 . I am 13 years old. I’m a schoolboy. I know China is a great 19 . I want to make friends(交朋友) 20 China and I want to learn Chinese. There are nineteen students in 21class. My classmates are from six countries. They are learning English. My parents are from France. They 22French . I speak English and French. There are many Chinese 23 in Toronto. I want to learn Chinese , 24 I don’t have any Chinese textbooks. Could you 25 me? Please write back soon. Thank you. Jack Wilson
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