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

______射线的本质是中性的光子流，______射线的本质是高速运动的电子流。

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.

Either he or I ______to the airport.

世界上第一台电子数字计算机采用的电子器件是______。

世界上第一台电子数字计算机采用的电子器件是_____。

世界上第一台电子数字计算机的诞生时间是______。

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

Hurry up, or you ______ catch the train.

德育过程从本质上说是“________”地统一过程。