神奇魔术师（按要求写句子）    

1．人们激情满怀地举起捕获物。     

     改为“把”字句：                                                                                                                              

     改为“被”字句：                                                                                                                          

2．缩句。     

     (1)千姿百态的各式彩龙在江面游弋。

     (2)那些抢到鸭子的勇士们高高地举起了手中的猎物。

Halon gas will decompose and may form very hazardous toxic fumes when discharged（）.

A.directly on flames

B.at room temperature

C.in an extremely cold climate

D.None of the above