_______ it or not,his discovery has created a stir in scientific circles.
问题描述：
_______ it or not,his discovery has created a stir in scientific circles.
1.Believe 2.To believe 3.Believing 4.Believed
答
选1
Believe it or not.信不信由你
其实补齐是(You) believe it or not.从语法上说是祈使句.但其实没必要,这直接也可以当做一个固定短语来理解.