A:x>y>﹣y>﹣x
B:﹣x>y>﹣y>x
C:y>﹣x>﹣y>x
D:﹣x>y>x>﹣y
小莉和外公视力都不正常,小莉看书总把书放得很近,而她外公看报纸时却把报纸放得很远,小莉和外公应分别戴什么样的眼镜矫正视力( )
—Let's play computer games.
—That _________ good.