A.挺直 B.挺腹 C.頷胸
A.同等關(guān)系B.和諧關(guān)系C.平等關(guān)系
A.應(yīng)當(dāng)輕聲細(xì)語(yǔ) B.應(yīng)當(dāng)高談闊論 C.應(yīng)當(dāng)談笑風(fēng)生