The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
第二部分:英语知识运用(共两节,满分45分)第一节:单项填空(共15小题;每小题1分,满分15分)21. I am really tired___________Tom. He had me___________for two hours in the rain.
Work hard _____ you can succeed.
All plants need air_____ they need water.
_____ he wasn’t ready in time, we went without him.
Sit _____ you like.