镁在空气中燃烧发出（ ）
A．火星四射
B．淡蓝色火焰
C．耀眼的白光
D．蓝紫色火焰
答案：C
If the question _______ incorrectly, _______ question will be given to you [ ]
A. is answered, other
B. answers, other
C. is answered, another
D. answers, another
