题干
11.________ with fire in the garden ,the boy got ________.
A：Playing;burning
B：Played;burning
C：Played; burnt
D：Playing;burnt
答案(点此获取答案解析）
D
A：Playing;burning
B：Played;burning
C：Played; burnt
D：Playing;burnt
）原子核内的中子数与核外电子数之差是（ ）
