问题
单项选择题
二氧化碳保护焊时一般焊丝伸出长度越长，飞溅率（）。
A.越小
B.越大
C.没差别
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
二氧化碳保护焊时一般焊丝伸出长度越长，飞溅率（）。
A.越小
B.越大
C.没差别
参考答案：B
阅读理解。
two children, Henry and Helen. Henry is a pupil (小学生). He is interested in (对……感兴趣) playing football, and he is good at (擅长) playing the violin. Helen cannot walk. She is too young. She is not a pupil. They are from America. | |
| 1. How many children does Mr Green have? | |
[ ] | |
| A. Two. B. Three. C. Four. | |
| 2. What can you call Mr Green's wife? | |
[ ] | |
| A. Miss Green. B. Mrs Green. C. Mrs White. | |
| 3. Mr Green's daughter's name is ______________. | |
[ ] | |
| A. Green Helen B. Helen Green C. helen green | |
| 4. Is Henry a pupil? | |
[ ] | |
| A. Yes, he is. B. Yes, she is. C. No, she isn't. |
