Where did these numbers come from？

Eleven and Twelve The number"eleven"comes from the German word"ainlif"，which means"one left"in English.Twelve follows the same rule.It comes from"twalif'—"two left".Why did people use"teen"instead of "lif" from 13 to 19？We still don't know.

42.195 kilometres in a Marathon（馬拉松） The story began with an ancient Greek soldier Pheidippides.Once his country won a big war（戰(zhàn)爭） and he carried the good news from Marathon to Atjye.ains.He ran so fast that he died after telling people the news.To remember Pheidippides，people held the first modern marathon in the first Olympic Games in 1896.It was about 40 km from Marathon to Athens.But race organizers for the 1908 Olympic Games in London wanted to add something special.They made it 42.195 km.And since 1924 the number 42.195 has been kept in marathon.

28 Days in February Before the calendar（歷法） we use today，one of the first Roman calendars had only 304 days and ten months（March through December），with six months of 30 days and four of 31 days.The second king of Rome changed the old calendar.He added 50 days for January and February.To make the new months longer，he took one day from each of the 30-day months，and then made 56 days to divide between，January and February（28 days each）.Later January was given one more day to add up to 355 days a year，but February still had 28 days.That's how it became the shortest month and it stayed that way ever since.

（1）The marathon became longer at London Olympic Games because

D

D

.
A．the British was bad at Maths
B．the British didn't like the Greek story
C．the British wanted to run longer
D．the British wanted to make the race different
（2）How many days were there in each month after the second king changed the old calendar？

A

A

A．28，29 or 31.
B．28，30 or 31.
C．28，29 or 30.
D．29，30 or 31.
（3）Which of the following is NOT true according to the passage？

C

C

A．We don't know why the numbers from 13 to 19 didn't follow the rule of twelve.
B．There used to be 304 days a year according to the first Roman calendars.
C．The Greek soldier ran from Athens to Marathon to carry the good news.
D．After changing the old calendar，F(xiàn)ebruary became the shortest month in a year.