【C2】A．contributedB．informedC．spreadD．conceived

The tube in a boiler should be blinded if found _____.A.scaledB.informedC.leakyD.deformed

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【C4】A．contributedB．discoveredC．inventedD．generated

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The Oscar best actor ______ his success more to luck than to ability.A．contributedB．celebr

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【C9】A．contributedB．distributedC．distressedD．disturbed

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A．ensureB．separateC．spreadD．switch

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The shop assistant _____ out the food on the counter.A.laidB.displayedC.spreadD.arrang

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The Empire State Building was 【conceived】 on a gr

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