A. HTC, Motorola and Nokia have made a great success in cheaper smartphones. B. Samsung will take measures to meet the challenge from cheaper brands. C. Samsung has mainly turned to smart watches and wristbands. D. Cheaper smartphones will soon lose the present successful market. 二、简答题(本大题 1 小题，20 分)根据题目要求完成下列任务，用中文作答。