用单词的适当形式填空。
(above, for, across, history, serve, double, possible, enter, build, be)
The Channel Tunnel (英吉利海峡隧道)
In 1858, a French engineer, Aime Thome de Gamond, arrived in England with a plan for a twenty-one
mile tunnel 1 the English Channel. He said that it would be 2 to build a platform in the center of the
Channel. This platform 3 as a port and a railway station. The tunnel would be well-ventilated (通风好的)
if tall chimneys were built 4 sea-level (海平面). In 1860, a better plan was put forward (提出) by an
Englishman, William Low. He suggested that a 5 railway tunnel should be built. This would solve the
problem of ventilation, 6 if a train 7 this tunnel, it would draw in (吸入) fresh air behind it. Forty-two
years later a tunnel was actually begun. If, at the time, the British had not feared invasion (入侵), it would
have been completed. Recently, there has again 8 great interest in the idea of a Channel Tunnel.
If it 9 , it will connect (连接) Britain to Europe for the first time in 10 .
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