Bikes，which are environment-friendly，have become quite popular again among big cities in China.Do you often ride a bike to school？Here's some advice for you.
   Be careful.
   Try not to use busy roads.In some cities there are special lanes（車道） for bikes only.Use them when you can，but watch out — people often walk along them.Check the road before starting.Besides，when you're with friends on bikes，it's much safer to ride behind，not next to each other. （1）You should take more care where one road meets another. Slow down and check both roads carefully.You must use lights at night.Don't wear dark colors.Yellow and white are the easiest ones for drivers to see in the evening.
   Look after your bike.
   （2）經(jīng)常檢查你的自行車。Do all the parts work properly？Is there enough air in your tyres（輪胎）？
   Wear a helmet（頭盔）.
   （3）If you have an accident or fall off your bike，a helmet will protect your head. But remember to choose the right size when you buy one.
   Play safe.
   A bike isn't a toy and there should be only one person on it.Also it's very risky to play on the bikes. （4）許多孩子在自行車上玩耍時(shí)出了事故。
   Follow the traffic rules.
   （5）Red traffic lights aren't only for cars or buses. They're for you too if you're on a bike.You're also breaking the law if you go the wrong way up a one-way street.
（1）

在兩條路的交匯處你應(yīng)該更加小心。

在兩條路的交匯處你應(yīng)該更加小心。

（2）

Check your bike often.

Check your bike often.

（3）

如果你出了事故或從自行車上摔下來，頭盔將會(huì)保護(hù)你的頭。

如果你出了事故或從自行車上摔下來，頭盔將會(huì)保護(hù)你的頭。

（4）

Many children have accidents when they play games on their bikes.

Many children have accidents when they play games on their bikes.

（5）

紅色交通燈不僅僅適用于汽車或公共汽車。

紅色交通燈不僅僅適用于汽車或公共汽車。