根据GB5842—2006标准，瓶体对接焊缝的余高应为（）mm。
A.0~1.5
B.1~1.5
C.1~2.5
D.0~2.5
参考答案：C
看图，写出相应的单词。
1. 2. 3. 4.
_____________ _____________ _____________ _____________
I saw ___ boy and ___ old woman sitting at the table, thought ___ old woman must be ___ boy’s grandma.
A．a..a..the..the
B．a..an..the…the
C．the..the..a..a
D．a..an..an…the
2. 
3. 
4. 