学习汉语拼音后会对学习英语产生影响,这属于学习的()现象。
A.定势
B.功能固着
C.迁移
D.酝酿效应
参考答案:C
Since the film “Life of Pi” was on, it _________ more and more people around the world.
A.attracted
B.had attracted
C.has attracted
D.will have attracted
某食品企业一个月内被消费者投诉1次的概率为0.3,投诉2次的概率为0.4,投诉3次的概率为0.2,0次投诉的概率为0.1.
(1)求该企业一个月内至少被消费者投诉2次的概率.
(2)假设一月份与二月份被消费者投诉的次数互不影响,求该企业在这两个月内共被消费者投诉2次的概率.