小红在与父母的交往中，总是夸父母的好，逗他们开心，从不与长辈顶嘴，一家人十分和谐。小红的做法 [ ]

①很虚伪，不值得一提

②懂得与父母交往的艺术

③太顺从，没主见

④是增进亲情的好办法

A．②④

B．①④

C．③④

D．②③

In small angle stability，the metacentric height（）.

A.is found in the hydrostatic tables for a level vessel

B.multiplied by the displacement yields the righting moment

C.is always positive

D.is calculated by subtracting KG from KM