书籍 Top Notch 基础A - 第 4 单元 - 第 3 课

the number 21; the number of days in three weeks

二十一, 21

the number 22; the number of players on two soccer teams

二十二

the number 23; the number of pairs of chromosomes in the human body

the number 24; the number of hours in a day

the number 25; the number we get when we multiply five by five

the number 26; the number of letters in the English alphabet

二十六

the number 27; the number you get when you multiply three by three by three

二十七

the number 28; the number that is equal to twenty plus eight

二十八, 28

the number 29; the number of days in February when the year has one extra day during a leap year

二十九

the number 30

三十

the number 31; the number of days in January, March, May, July, August, October, and December

三十一

the number 32; the number of teeth an adult has

三十二

the number 40

四十

the number 50

五十

the number 60

六十

the number 70

七十, 70

the number 80

八十, 80

the number 90

九十, 90

the number 100

一百

the number of years in a century plus one

一百零一, 101