（二）短文语法填空（1分/题，共分10分）

In Mount Berry, Georgia, people find a group of schools built specially for mountain children. The schools, as well as the mountain itself, are named ___66___ Martha Berry.

Martha Berry was born in 1866. Luckier ___67___ most Georgian mountain children, she received education. But she never forgot other children of the mountains __68____ parents couldn’t afford to send them to school. In 1902 Martha Betty started a school with only five pupils. Now, ninety years later, ___69___ are a number of Betty schools in the area, with ___70___ total of over one thousand students and about five thousand students ___71___ (wait) for their opportunities.

Martha Betty in her later years received many medals and honors for what she ___72___ (do) for the poor mountain children of Georgia, and in 1931 she was named one of the most important ___73___ (woman) in the United States. She never stopped ___74___ (work) for the mountain children ___75___ her death in 1942.

某车床中拖板丝杆螺距为5毫米，刻度盘等分为100小格。如将Ø40mm的外圆一刀车到Ø36mm，中拖板应转多少格？