41. What is the main idea of the passage?
(A) Efforts to redefine iPhone.
(B) Smartphone breakthroughs.
(C) Filing a patent for smartphones.
(D) Power supply for smartphones.
答案:登入後查看
統計: A(7), B(3), C(0), D(0), E(0) #2336215
統計: A(7), B(3), C(0), D(0), E(0) #2336215