题干
She ________ a dictionary to our classroom, but I did.
A：didn't take
B：doesn't take
C：will take
D：is taking
答案(点此获取答案解析）
A
She ________ a dictionary to our classroom, but I did.
A：didn't take
B：doesn't take
C：will take
D：is taking
)= P(ξ>c)，则c=（ ）
