Laws do not ensure social order since laws can always be ______, which makes them______unless the authorities have the will and the power to detect and punish wrongdoing.

单项选择题Since it is now______to build the complex central processing unit of a computer on a single silicon chip using photolithography and chemical etching, it seems plausible that other miniature structures might be fabricated in______ways.

单项选择题Parts of 17th century Chinese pleasure gardens were not necessarily intended to look______, they were designed expressly to evoke the agreeable melancholy resulting form asense of the______of natural beauty and human glory.