【C18】A．confirmedB．ensuredC．assumedD．concerned

We have ____ friendly relations with many countries in the world.A、confirmedB、establish

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This letter is _____ our telephone conversation this morning.A、confirmedB、to confirmC、to

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【C18】A．thatB．whichC．whatD．／

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【C6】A．pretendedB．fakedC．assumedD．copied

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【C20】A．allowedB．ensuredC．drivenD．committed

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Pauline failed to catch the flight because______.A．her ticket was not confirmedB．she booke

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下列物质中 ( )是目前已经肯定的必需脂肪酸。A C16:2B C18:2C C18:3D C20:3(E)C20:4

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