随着汽车的普及，自行车作为一种交通工具已备受冷落。在“六五”世界环境日来临之际，某市向市民发出了一份倡议书，呼吁广大市民骑自行车上下班（Ride to Work Day）。请你就此举措用英语写一篇l20一l50词的短文，发表在某英语报上。内容要点要包括骑自行车上下班的好处，如节能环保、有利健康、缓解交通压力、易找停车位、不受堵车影响等等。

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他的汽车被陷在泥里动不了。（be stuck in）

我的汽车最多能坐四个人。(up to)

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The US auto (汽车) industry, a symbol of the American spirit, narrowly escaped a sudden breakdown, _____ China has become the world's top automaker.

The US auto (汽车) industry, a symbol of the American spirit, narrowly escaped a sudden breakdown, _____ China has become the world’s top automaker.

1. A.
   when
2. B.
   while
3. C.
   but
4. D.
   although