19．
If you happen to be near Ocean Avenue Elementary in Portland，Maine，you might see Paige Marchand walking to school．According to Portland TV station WCSH，Paige is part of a"walking school bus"---a group of kids who walk to school together every day．A parent comes along to act as a driver of sorts，to make sure the kids walk safely．But the kids look out for each other，too．
"Sometimes，they'll pick one person to go ahead of everybody and then just stop at each crossing，waiting for everybody to catch up．Everyone is excited，"Paige told WCSH reporter Chris Rose．
This Wednesday morning was October 5th，2011．That morning，more than 3，700schools across the country participated in International Walk to School Day．The goal is to get more kids walking every day-like Paige-so long as there's a safe route to and from school．
"The only walking a lot of students do is to walk from the classroom to the door of their parents'car，"said Paul Holman，a physical education teacher at Spence Elementary in La Crosse，Wisconsin．"It's great exercise．And it'll help you get fit instead of fat．We let the kids know that walking is a start．"
Forty years ago，approximately half of all kids walked to school，according to people who keep track of such statistics．Today，that number is reportedly down to around 13 percent．International Walk to School Day is trying to reverse that trend．
When it started 14 years ago in Chicago，Illinois，it was known as"National Walk Our Children to School Day．"But within a few years，it went international，and today millions of kids in all 50 states and a number of other countries participate．
Last week，Spence students took part in a regional"Walk to School Challenge"‖to celebrate the day．Kids who have to take buses to school were able to participate．They did their walking inside the school's gym．
"I like to walk in school，"Spence student Cowan Reuter told Anderson．The school with the highest participation rate got a special trophy（奖杯），according to the Tribune．The name of the trophy？"The Golden Shoe．"
41．The group of kids who take part in the"walking school bus"D．
A．have to walk to school alone
B．have to take a bus to school
C．have a teacher to look after them
D．enjoy waking to school
42．According to Paul Holman，the walkB．
A．aims to get kids to lead a green life
B．is good for kids'physical health
C．is enough for kids'daily exercise
D．doesn't need to be done every day
43．The underlined word"reverse"in Paragraph 5 is closest in meaning to"C"．
A．examine
B．appreciate
C．change
D．report
44．International Walk to School Day started inA．
A.1997
B.2001
C.2007
D.2011
45．We can learn from the passage that the"Walk to School Challenge"C．
A．was an internationally famous activity
B．was organized for kids walking to school
C．was actually held inside a school
D．awarded the winner a golden shoe．
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