track n. 轨迹, 车辙, 跟踪, 航迹, 足迹, 路, 磁轨, 途径

vt. 循路而行, 追踪, 通过, 用纤拉

vi. 追踪, 留下足迹, 走

We followed his tracks through the snow.我们跟着雪地上他留下的脚印下。

The train left the ran off the track. 火车出轨了。

当堂检测：

从下面的框中选择合适的单词，并用其正确形式填空。

maglev, noise, track, float, air, link, take, test, refer to, ceremony

1. What the old headmaster said at the graduation _____ greatly encouraged us. .

2. A maglev train _____ about 10 mm above the guide way on a magnetic field.

3. A maglev train has no friction but still has _____ resistance

4. Because maglev trains have no wheels running along, they have no wheel _____.

5. In the mid 1980s, Britain was the first country to introduce a ______service.

6. Germany is the only country with solid plans for a maglev railway which will _____ Berlin with Hamburg in 2005.

7. It is known that maglev trains follow guidance ______ with magnets.

8. Last summer I had a chance to _____ a maglev train to Pudong Airport.

9. Countries who ______ maglev trains are the USA, Japan, Germany and China. .

10. Maglev trains are often ______ as Maglev which is short for Magnetically Levitated trains.

课后反思：

__________________________________________________________________________________________________________________________________________

课后训练

单项选择

1. After out journey from a long travel to Tibet ,we teturned home ,____________.

2. Scientists have managed to make advanced anti-fire products ,_______ Nami technology.

A. used B. using C. to use D.use

3. Prices of daily goods ______ through a computer can be lower than store prices.

A. are bought B. bought C. been bought D. buying

4. The Olympic Games, _____ in 776 BC, did not include women competitors until 1912.

A. first playing B. to be first played

C. first played D. to be first playing

5. He was driving __________ full speed down the motorway when it happened.

A.with B.at C. for D.on