下列物品不适合火焰灼烧灭菌的是（）
A.接种环
B.接种针
C.镊子
D.培养基
参考答案：D
The man____of shooting 6 school children was caught by Beijing police,the Xinhua News Agency
reported on Friday. [ ]
A. being suspected
B. suspecting
C. suspected
D. to be suspected
请标出图中通电螺线管的N极和它附近静止小磁针的N极．
