10．C．Listen to the dialogue and tell whether the following statements are true or false（判斷下列句子是否符合你聽到的對話內(nèi)容，符合的用"T"表示，不符合的用"F"表示）（6分）
15．The boy went to a store to choose a mobile phone for his mum．
16．With the help of the shop assistant，the boy knew how the phone worked．
17．The price of the white phone was too high for the boy．
18．The white phone couldn't be used to send emails or play games．
19．At last，the boy bought a phone of the same model as the shop assistant's．
20．This dialogue is about whether a student should buy an expensive phone or not．
