题干
---What about ______ conference you attended last week?
---To tell the truth, it was too boring, you know, _____ conference like that.
---To tell the truth, it was too boring, you know, _____ conference like that.
A：a, the
B：the, /
C：the, a
D：the, the
答案(点此获取答案解析）
C
位同学参加某项选拔测试，每位同学能通过测试的概率都是
，假设每位同学能否通过测试是相互独立的，则至少有一位同学通过测试的概率为
