【C20】A．housesB．householdsC．homesD．families

The underlined phrase “stately homes”in Paragraph 4 means （)．A． state－owned housesB． hous

What is the passage mainly about？ （)A． Negotiation in a family． B． Education in a family．

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

【C20】A．communicateB．conveyC．transformD．translate

【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