A．distinguishB．preventC．judgeD．differ

We should try our best to the children from danger.A、coverB、preventC、leave

Please ______ from smoking until the aeroplane is airborne.A．refrainB．preventC．resistD．res

Please ______ from smoking until the airplane is airborne.A．resistB．preventC．refrainD．rest

Please ______ from smoking until the airplane is airborne.[1997]A．refrainB．preventC．resist

The word "afford" in the passage is closest in meaning toA．offerB．preventC．increaseD．remov

【C4】A．distinguishB．acknowledgeC．identifyD．convey