(单选题)
Compared with the disadvantages current input system for ALS sufferers have, GazeSpeak will be ______.
A.low-cost, strong in system, easy to take with users
B.affordable, lightweight, environmentally friendly
C.easy to operate, movable, able to check itself
D.available under strong light, rich in resources, inexpensive
参考答案:B
参考解析:
细节理解题。根据文章第四段可知,目前针对患有渐冻症或其他运动障碍的人的眼球追踪输入系统价格昂贵,在阳光下不够强大,需要频繁的重新校准和大量的、相对不易移动的设置。故选B。
知识点: