Question

    You can’t play, run, skate or ride a bike on the railroad ( 铁 路 ). There are many places where the railroad tracks ( 轨道) cross the roads or streets. Many of these railroad crossings are marked with the signs in the table below.

	This sign means you are coming to a railroad crossing. Always look both sides and listen carefully to be sure a train is not coming from either direction before you go across the tracks.
	Many railroad crossings have a gate with flashing lights. The gate will close whena train is coming ●   NEVER play around a closed railroad gate. ●   NEVER try to get across the tracks before the train gets there.
	Some railroad crossings which don’t have gates may have this sign. When the lights are flashing, a train is coming. You should wait until the train passes instead of trying to cross the tracks.

Be careful when crossing road tracks:

* Railroad tracks are uneven (凹凸不平的). You should not bicycle, skate or run when crossing the tracks.

* Trains are very large and heavy, so they need take a long time to stop.

* Sometimes when a train has just passed from one direction, another train may come from the opposite direction. You may not notice the second train because of the noise of the first train.

1.When you see the first sign, you should___________.

A.not pass the railroad tracks B.stop to wait for a train to pass

C.pass the railroad tracks at once D.make sure no train is coming before you cross the tracks

2.Where can you see the third sign?

A.At the train stations. B.On the railroad tracks.

C.At railroad crossings that have gates. D.At railroad crossings that have no gates.

3.What can you learn from the passage?

A.There are many gates at the railroad crossings. B.We can see many railroad signs in our cities.

C.It’s dangerous to play, run or ride a bicycle on the railroad. D.It takes a short time for a train to stop.

Answer

1.D

2.D

3.C

【解析】

本文主要是告诉我们铁道路口的标志，告诉我们注意安全。

1.细节理解题。根据“Always look both sides and listen carefully to be sure a train is not coming from either direction before you go across the tracks.”可知，第一个标志告诉我们过铁道之前，一定要两边看，仔细听，以确保过铁道前没有火车驶来。故选D。

2.细节理解题。根据“Some railroad crossings which don’t have gates may have this sign.”可知，一些没有大门的铁路道口可能有这个标志。故选D。

3.推理判断题。A项：铁路道口有许多门；B项：在我们的城市里可以看到许多铁路标志；C项：在铁路上玩、跑或骑自行车是危险的；D项：火车停下来需要很短的时间。分析全文内容可知，主要是介绍铁路标志，告诉我们要注意安全。故选C。