1.quail n.鹌鹑

例：Europeans have long known that eating quail sometimes makes the eater ill．

2.qualify v.（使）合格(to meet the required standard)；（使）具有资格（to certify）

词根记忆：qual（性质，特征）+ify（使…）--使具有某种性质--具有资格

例：Farmers wished to qualify for support payments.

派生词：qualified(a．有资格的；有限的)；disqualify(v.丧失资格)

3.qualitative a．（性）质的，质量的；定性的(of, relating to, or involving quality or kind)

词根记忆：qual(性质，特征)+it+ative--性质的

例：qualitative change质变//qualitative analysis定性分析

4.quantitative a.（数）量的，（定）量的(of, relating to, or involving the measurement of quantity or amount)

词根记忆：quant(量，数量)+it+ative--量的

例：quantitative analyses定量分析

5.quantum n.[pl. quanta]量（amount, quantity）；量子(any of the very small increments or parcels into which many forms of energy are subdivided)

词根记忆：quant(量，数量)+um--量

例：quantum chemistry量子化学

同根词：quantity(n．数量，总量)；quantitative(a．数量的)

6.quarantine n．隔离检疫期（a restraint upon the activities or communication of persons or the transport of goods designed to prevent the spread of disease or pests)

例：It will be necessary to keep the dogs in quarantine for 30 days after importing them.

7.quarry n.猎物(prey);v.挖掘(to dig)

例：Snow geese are a popular quarry for hunters in the Arctic.

8.quasar n.【天】类星体(any of a class of celestial objects that resemble stars)

例：Quasars are so distant that their lights have taken billions of years to reach the Earth.