It is well--known that it takes travelers only 48 hours by train to go from Beijing to Lhasa, the capital of West China's Tibet, from July 1, 2006 on. travelers can enjoy the beautiful views during the 48--hour train ride.

   The new railway line has been controlled by the Beijing' s West Railway Station from July 1,2006. The most important part of the line, the Qinghai--Tibet Railway, has been completed.

   The Qinghai--Tibet part of the railway is the world's highest railway. About 960 kilometers of the train tracks are 4,000 meters above sea level, the highest parts reach 5,072 meters.

   The railway is the world's longest plateau(高原) railroad which is 1,956 kilometers long, from Qinghai's capital city Xining to Lhasa of Tibet.

The trains running on the Qinghai--Tibet Railway have very good conditions. If the passengers feel hard to breathe, they will be provided with oxygen masks. And all of the trains have oxygen--supplying equipment.

1. People can't travel to Lhasa by         before July 1,2006.

     A. car          B. plane    C. train        D. bus

2. The Qinghai--Tibet Railway is         kilometers long.

     A.960      B.1,956      C.4,000        D.5,072

3. The highest parts of Qinghai--Tibet Railway reach         meters.

A.960      B.4,000      C.5,072      D.1,956

4. The passengers will be provided with oxygen masks when they           

A. feel hard to breathe             B. are tired

     C. are stressed out                D. are hungry

5. The best title for the passage is           

     A. Travel from Beijing to Lhasa     B. Qinghai--Tibet railway completed

     C. Train with best conditions        D. The longest railway