题干
—— Have you ever seen anything like that before？
---- ____.
---- ____.
A：No，I never have seen anything like that before
B：No，never I have seen anything like that before
C：No，never have 1 seen anything like that before
D：No，I have seen anything like that before never
答案(点此获取答案解析）
C
展开式中不含
项的系数的和为（ ）
