小明4分读了396个字，小红5分读了505个字．小明和小红谁读得快？
396÷4=99（个）
505÷5=101（个）
101＞99
答：小红读的快．
Strategic competence refers to the coping of various strategies which communicators employ to start, end, keep, repair and re-direct ______.
用500g干砂做筛分试验，其累计筛余百分率为：A1=5.5%，A1=13.9%，A3=23.3%，A4=61.6%，A5=82.1%，A6=98.5%。试计算：细度模数是多少是粗砂还是细砂？
