题干
—Where are you going to spend your summer holidays?
— in New York, but I'm not sure．
A：Perhaps
B：Suddenly
C：Especially
D：Immediately
答案(点此获取答案解析）
A
—Where are you going to spend your summer holidays?
— in New York, but I'm not sure．
A：Perhaps
B：Suddenly
C：Especially
D：Immediately
和
，样本标准差分别为
和
，则（ ）