所谓运用中的电气设备，系指全部带有电压、_________或______________的电气设备。

Many boys enjoy _______ football, basketball or baseball

Which do you think is ________, health or wealth？

_______________will not continue if an ongoing operation is changed or deletedA、

技术的发展经历了三个大的发展阶段,即以_____为基础的技术体系;以机械和电气技术为基础的技术体系和当代蓬勃发展的以_______为基础的技术体系。

分子病是指由_____造成_____ 异常所引起的疾病。

29．__________ when you are on the bus or bike．

Which do you think is _________________important, health or wealth?

And they can ______their passports______，making leaving or “escaping” virtually impossible.

电击是指电流________对人的肌体所造成的危害。

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

技术的发展经历了三个大的发展阶段,即以_____为基础的技术体系;以机械和电气技术为基础的技术体系和当代蓬勃发展的以_______为基础的技术体系。