题干
McDonald's restaurants _________ in Crimea(克里米亚) by the company on Apr 4th, 2014.
A：close
B：closed
C：are closed
D：were closed
答案(点此获取答案解析）
D
McDonald's restaurants _________ in Crimea(克里米亚) by the company on Apr 4th, 2014.
A：close
B：closed
C：are closed
D：were closed
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