我们在指导学生进行课外阅读时，常提倡给学生一把“金钥匙”。然而，万能的金钥匙在现实中是根本不存在的，而“解剖刀”却随处可见，其用处也比“金钥匙”可靠得多。 解剖之刀，古已有之，如庖丁解牛之刀；当今世界，更为易得，如医院锋利的手术刀，无影无形的γ刀。其用处乃 When we guide students to read extracurricular, we often advocate giving students a “golden key.” However, the omnipotent golden key does not exist in reality, and the “scalpel” is ubiquitous and its usefulness is much more reliable than the “Golden Key.” Anatomy of the knife, the ancient has been, such as Qiong Ding solution knife; in today’s world, more accessible, such as the hospital sharp scalpel, shadowless invisible gamma knife. Its usefulness is