WordRoot

词根 -duc- 词族：introduce / conduct / reduce / deduce 等及考研短语。

词根 -fer- 词族：offer / transfer / refer / prefer / infer 等及考研短语。

词根 -ject- 词族：project / reject / subject / object 等及考研短语。

词根 -pos- 词族：compose / expose / propose / impose 等及考研短语。

词根 -spect- 词族：inspect / respect / prospect / perspective 等及考研短语。

词根 -tract- 词族：attract / extract / contract / distract 等及考研短语。