O Level A recommendations: None specified.

级建议：无详细说明。

These guys are intelligent, self-made, tenacious, and here is me with my one O-level .

这些家伙聪明伶俐、自力更生、意志顽强，而我只有一个高中文凭。

O Level A recommendations: Patients with syncope should undergo a standard 12-lead electrocardiogram (ECG).

级建议：对于晕厥病人应做12导联心电图。