A、20 percent. B、30 percent. C、18.38 million. D、183.8 million. D新闻中提到，美国零售联盟称，今年近80％的消费者，约1．838亿人将会在“网络星期一”这一天疯狂购物。

(5)America’s holiday shopping season started on Black Friday, the day after Thanksgiving. It is the busiest shopping day of the year. Retailers make the most money this time of year, about 20 percent to 30 percent of all revenue all year. In an era of instant information, more and more people will shop online. Shoppers can use their mobile phones to find deals.(6)Nearly 80 percent of this year’s holiday shoppers, or about 183.8 million people, will shop on Cyber Monday, says the NRF. More than half of all holiday purchases will be made online, they say. One-in-five Americans will use a tablet or smart phone.(7)NBC News reported that for many, shopping online was "a more comfortable alternative" than crowded malls.
     (7)However, the shift to online shopping has had a big impact on "brick and mortar" shopping malls. Since 2010, more than 24 shopping malls have closed and an additional 60 are struggling, according to Green Street Advisors.
5. When is the busiest shopping day of the year?
6. How many holiday shoppers will shop on Cyber Monday?
7. What does the news say about online shopping?