One day, Wei Hua did some shopping at Baijiafu Cell. After going back home, he spoilt some

One day, Wei Hua did some shopping at Baijiafu Cell. After going back home, he spoilt some drink over the receipt by mistake. Please help him answer the questions below.
Receipt
Baijiafu Cell
10/2/2009
Item Quantity Price Subtotal
shirt 1 $ 26 $ 26
CD 3 $ 5.5 (each) $ 16.5
Coke 5 $ 1.2 (each) ?
pen ? $ 3.5 7
Total ?
Add: 616 Tongwu Street, Panjiawan
Tel: 6611189(shop) 13976617189 (manager)
Baijiafu Cell 百家福超市 receipt 收据 quantity 数量
subtotal 小计 total 总计
【小题1】When did Wei Hua do the shopping?A．On October 2 B．On February 10C．in the morningD．at night【小题2】How much did Wei Hua pay for Coke?A．$ 1.2 B．$ 3.5C．$ 6.00D．$ 16.5【小题3】How much pens did Wei Hua buy?A．One B．TwoC．Three D．FiveA

(答案→)A 解析：这是个购物单，因不小心弄湿了，有些细节已经看不清楚了，通过阅读来将其中的信息补充完整。【小题1】细节理解题，根据文中语句“10/2/2009”理解可知。魏华在2009年十月二号去购物的，故选A。【小题2】细节理解题，根据文中表格中coke的价格可知数量是5，单价是$ 1.2 ，其总价格是1.2*5=6.0故选C。【小题3】细节理解题，根据文中表格中pen的单价是$ 3.5 总价是7因此其购买的数量应是7/3.5=2故选B。

就是这个解释