Complete the following sentence with a (compound) word derived from the one given in bracket.
What caused the（ ）of the first world war? (break, out)
【正确答案】：OUTBREAK
【题目解析】：
第一次世界大战爆发的导火索是什么？outbreak多指战争的爆发。breakout脱逃，越狱，突围。根据句意应该是outbreak。
Complete the following sentence with a (compound) word derived from the one given in bracket.
What caused the（ ）of the first world war? (break, out)
Complete the following sentence with a (compound) word derived from the one given in bracket.
What caused the（ ）of the first world war? (break, out)
第一次世界大战爆发的导火索是什么？outbreak多指战争的爆发。breakout脱逃，越狱，突围。根据句意应该是outbreak。