【C19】A．choiceB．preferenceC．potentialD．tendency

The tendency of a flammable liquid to vaporize is indicated by its _____.

The money I have saved is ____ for buying a car.A.proficientB.efficientC.potentialD.suff

He is an ____ manager.A.proficientB.efficientC.potentialD.sufficient

A．fashionableB．healthyC．potentialD．risky

【C16】A．choiceB．formC．roleD．way

A.choiceB.viewC.lessonD.host