【C20】A．considerableB．consideringC．consideredD．considerate

【C20】A．elevatedB．mercifulC．contentedD．grateful

【C13】A．concerningB．consideringC．regardingD．disregarding

A．considerableB．reliableC．availableD．flexible

【C20】A．followingB．consideringC．astonishingD．appreciating

【C20】A．shakingB．noddingC．shookD．/

下列物质中 ( )是目前已经肯定的必需脂肪酸。A C16:2B C18:2C C18:3D C20:3(E)C20:4