常见普通数字, 大数字, 小数, 分数, 百分比, 价格, 比率, 年代, 时刻

　　The earth’s crust is divided into seven sections.

　　There are only 24 well qualified male students at the deep spring college.

　　A job interview usually lasts from 30 to 45 minutes.

　　Middle English extended from about 1100 to about 1475.

　　I taught my minority students English and Dram classes in high school for20 years.

　　Dry ice was first manufactured in 1925.

　　Tuition will be on average of 9 percent higher this year than last.