Thousands of Burbank students biked to school on Wednesday morning and the children at Community Day School were not going to miss out on the event.

With the help from two local bicycle enthusiast groups，the campus' 25 middle and high school students were able to pedal（骑）down the bikeway for a 10-mile morning bike ride.

Krohn, headmaster of the school，considered having her students participate in Walk/Bike to School Day. But when she found most of her students had no bicycles, she connected the Bike Angels, who donate （捐赠）bicycles to children in Burbank during the holidays.

“The bikes that the Bike Angels get are donated, but so many of them are broken,” said Ernie, one of Krohn's teachers, an eager cyclist with some knowledge of bike repairs. “So we made judgements about what needed to be done. ”

As word spread about their efforts, a member from the WalkBike volunteered to help Ernie, and some students also stepped up to help repair the bikes in time for the event.

One of Ernie's students, 16-year-old Jacob, volunteered on Saturdays to help fix bicycles for his classmates. “I had a bike with a broken tire that I wanted to use to come to school. I asked my teacher if he could help me fix bikes, he taught me everything, and later I started volunteering there. I just started loving fixing bikes. ” He added that he planned to continue volunteering with the Bike Angels to repair bicycles for the community.

Ernie said that the biking event ended up with more students participating in a nationwide event in the US.

Beijing was once a city of bikes，known as the Bicycle Kingdom，【小题1】cars were reserved for official business and the politically powerful. However，decades of economic 【小题2】（grow）led to a huge flowing of cars in the city. Owning one became not just a marker of reaching the middle class but also a requirement for marriage. As the economy developed，autos pushed bikes off the roads，【小题3】（create）heavy pollution and miserable traffic.

【小题4】（fortunate），now Beijing may be returning to its roots. Thanks to about 20 technology companies，brightly colored shared bikes 【小题5】（flood）into Beijing in the last two years. Many local residents welcome the shared bikes 【小题6】the flexibility and freedom they offer. They pick up the bikes and then ride and drop 【小题7】off anywhere they like，locking the back wheel，with no need 【小题8】（find）a fixed place.

Analyses in China say it is three factors that contribute to bikes' increasing rapidly: a lot of cash looking for a home, a good idea and government support. "As the city's population grew, traffic jams got 【小题9】 (bad). "Cai, the ofo spokeswoman, said, "Shared bikes could solve the' last mile' problem in 【小题10】environmentally friendly way."

   During the recent school holidays I was walking past a playground on my way to a meeting. The thing that _____ me was not the number of children _____ the fresh air on a pleasant Queensland winter day，but the number of older people _____ those children.

Sure，there were a few younger mums and dads，but there were _____ more“old folk”who I doubt were all grandparents. It is great that they are able to _____ quality time with their grandchildren. After all，we often hear people say that their _____  for retiring（退休）is that they can devote more time to their families. However，I _____ how many grandparents are spending their retirement years taking on the role of full-or part-time _____ of their grandchildren.

Retirement is a(n) _____ time. We are generally living much longer than our own grandparents did, but as we ______ we become more limited in our ability to pursue our own ______. However, what if your plans for pursuing some of these lifetime dreams are ______ out of a sense of ______ for your family?

So how can you keep a ______ balance between helping out your family and ______ your dreams altogether？I'm not sure where the answer lies，but having an open and honest ______ with your family should be at the top of the list. You need to nip any sense of duty in the bud（对……一开始即加以阻止）— and sooner ______ later.

By all means，help your family whenever you can. Everyone will ______ from it，and your grandchildren will get the rewards from staying with their ______. Do it because you want to，not because you feel you have to. ______ spare time for yourself to realize your dreams and ensure that nobody puts your retirement on hold.

   Everybody sleeps，but what people stay up late to catch or wake up early in order not to miss varies by culture.

From data collected，it seems the things that cause us to lose the most sleep，on average，are sporting events，time changes，and holidays.

Around the world，people change sleep patterns thanks to the start or end of daylight-saving time（夏令时间）. Russians，for example，began to wake up about a half-hour later each day after President Vladimir Putin shifted the country permanently to“winter time”starting on October 26.

Russia's other late nights and early mornings generally correspond（相一致）to public holidays. On New Year's Eve，Russians have the world's latest bedtime，hitting the hay at around 3:30 a. m.

Russians also get up an hour later on International Women's Day，the day for treating and celebrating female relatives.

Similarly，Americans' late nights，late mornings，and longest sleep fall on three-day weekends.

Canada got the least sleep of the year the night it beat Sweden in the Olympic hockey（冰球）final.

The World Cup is also chiefly responsible for sleep deprivation. The worst night for sleep in the U. K. was the night of the England-Italy match on June 14. Brits stayed up a half-hour later to watch it，and then they woke up earlier than usual the next morning thanks to summer nights，the phenomenon in which the sun barely sets in northern countries in the summertime. That was nothing，though，compared to Germans，Italians，and the French，who stayed up around an hour and a half later on various days throughout the summer to watch the World Cup.

It should be made clear that not everyone has a tool to record their sleep patterns；in some of these nations，it's likely that only the richest people do. And people who elect to track their sleep may try to get more sleep than the average person. Even if that's the case，the above findings are still striking. If the most health-conscious among us have such deep swings（明显改变）in our sleep levels throughout the year，how much sleep are the rest of us losing？