问题补充：
- What will you do when you are lost in a strange city?
- I won that. Look! I have downloaded the map on my iphone.
A. lead to
B. worry about
C. insist on
D. be interested in
答案：
A. lead to
(答案→)B. worry about
C. insist on
D. be interested in
解析：句意：——但你在一个陌生的城市迷路时，你将会怎么做？——我不会担心。看！我已经在苹果手机上下载了地图。A. lead to通向； B. worry about 担心；C. insist on 坚持； D. be interested in对……感兴趣。根据I have downloaded the map on my iphone.可知“我”下载了滴入，因此在陌生的城市里不会感到担心，害怕。 故选B。
