犬表皮下缝合时，缝针要刺入( )。
A．表皮
B．真皮
C．角质层
D．皮下组织
E．皮下脂肪
参考答案：B
He had an accident ______ to work and was badly injured．
A．driving
B．driven
C．to drive
D．drove
单项选择。
would you like? [ ]
A. How
B. What
C. Where
D. How old
