题目内容：

    Mt Qomolangma is the 1. (world) highest mountain. How hard 2. (be) it to climb this mountain around 60 years ago? You can find out by 3. (watch) the film Climbers. The film tells the real stories of Chinese climbers, who climbed the mountain in 1960 and 1975.

On the northern slope of Mt Qomolangma, there is a 30-meter-high cliff (峭壁). It is 4. (possible) for climbers to get to the top without going over this cliff. In 1960, a Chinese climbing team tried to reach the top. The four members 5. (them) stood on each other's shoulders to climb the cliff. Although they didn't have enough oxygen and food, they still 6. (make) it to the top. They became the first people 7. (reach) the top of Mt Qomolangma from there.

Fifteen years 8. (late), another Chinese climbing team reached the top. They spent a whole day 9. (build) a metal ladder on the cliff. The ladder helped more than 1,300 10.(climb) from all over the world realize their dream of climbing the mountain. The ladder was retired in 2008. It is now in a museum in Lhasa, Tibet.