Ⅱ.补全信息
选择正确选项填入空白处，补全所给句子提供的信息。
A.to catch my eye
B．To prevent damage to wetlands and grasslands
C．to allow the animals to move safely and freely in their natural habitat
D．to overcome the most difficult engineering challenges
E．to work on this railway
F．To make sure we stayed healthy
1．I was one of the people who came from all parts of China ________．
2．Taking years to complete，the QinghaiTibet Railway is a record of all our efforts ________．
3．The first landmark ________ is the splendid Qingshuihe Bridge，the worlds' longest bridge built over permafrost.
4．Thirtythree passages have been built under the railway ________．
5．________，675 bridges with a total length of about 160 kilometres were built between Golmud and Lhasa.
6．________，several oxygenmaking stations were constructed.
[答案] 1—6 EDACBF
