1.单选题- (共2题)
，则“ab＝1”是
的( )
，则事件A恰好发生一次的概率为( )
2.选择题- (共4题)
3.
下面句中有一处错误，请找出来并改正。
Let off fireworks is my favourite thing at the Spring Festival.
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5.
Although she could speak very little Chinese, _______ we did manage to communicate with her..
Although she could speak very little Chinese, _______ we did manage to communicate with her..
6.
Although she could speak very little Chinese, _______ we did manage to communicate with her..
Although she could speak very little Chinese, _______ we did manage to communicate with her..
3.解答题- (共1题)
为获得k(k=1,2,3)等奖的折扣率，求随机变量
；
为获得1等奖或2等奖的人次，求
．试卷分析
-
【1】题量占比
单选题:(2道)
选择题:(4道)
解答题:(1道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：0
7星难题：0
8星难题：0
9星难题：3