【单选题】Question 3: Who is supposed to have the strikes?
A.
The Islamic State group.
C.
Four security officers in the Prophet’s Mosque.
D.
Four security officers in the US consulate.
【单选题】The strikes ________ serious damage on the economy.
【单选题】定义在 上的函数 是偶函数,且 ,若 在区间 是减函数,则函数 ( )