Reading 2 introduces a way Chongqing has found to solve a frustrating issue the proliferation of smartphones has brought about, i.e., how to properlycrowded sidewalks.（ ） . A.navigate B.avoid C.obstacle D.neglect

Reading 2 introduces a way Chongqing has found to solve a frustrating issue the proliferation of smartphones has brought about, i.e., how to properlycrowded sidewalks.（ ） . A.navigate B.avoid C.obstacle D.neglect

正确答案：A