题干

若自然数n使得三个数的加法运算“n+(n+1)+(n+2)”产生进位现象,则称n为“连加进位数”,例如,2不是“连加进位数”,因为2+3+4=9不产生进位现象;4是“连加进位数”,因为4+5+6=15产生进位现象;13是“连加进位数”,因为13+14+15=42产生进位现象;51是“连加进位数”,因为51+52+53=156产生进位现象.如果从0,1,2,99这100个自然数中任取一个数,那么取到“连加进位数”的概率是(     )

A:0.88

B:0.89

C:0.90

D:0.91

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A

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    Sometimes I have to admire people's imagination but what I admire most is the businessmen's sense of smell. China's Singles Day, which falls on Nov. 11 every year, has far surpassed its U.S. counterparts of Black Friday and Cyber Monday—combined. Last year, Americans spent a record $12.8 billion online between Thanksgiving Day and Cyber Monday. It's impressive until you compare it to the $17.6 billion in sales made by Chinese consumers in a single 24-hour period during 2016's Singles Day.

    Singles Day is known as “Bare Sticks Day” or “Bare Branches Day” in Chinese—because the date “11/11” looks like bare branches and “one” is the loneliest number. Singles Day began in the early 1990s in the dorm rooms of Nanjing University when a group of single friends were sorry about the lack of significant others and decided to mark the day by organizing activities as a group of singles and reducing their loneliness by buying themselves a gift.

    Then in 2009, sensing s break between the sales period of China's National Day on Oct. 1 and Chinese New Year in late January or early February, Alibaba's Jack Ma saw an opening: sell to comfort lonely hearts.

    The first year did only $7.5 million in sales, but just 8 years later, shoppers spent $25.3 billion, or 168.2 billion yuan, this year—a 40 percent jump from last year's $17.6 billion. Foe comparison, Black Friday and Cyber Monday in the U.S. only netted $6.79 billion in 2016. Amazon doesn't release sales figures for July's Prime Day, but it's pretty safe to believe the not-quite-national-holiday doesn't come close to $25 billion.

    “More than $25 billion in one day is not just a sales figure,” Alibaba Group CEO Daniel Zhang said in a statement. “It represents the desire for quality consumption of the Chinese consumer, and it reflects how merchants and consumers alike have now fully accepted the combination of online and offline sales.”