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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A statistically B occasionally C necessarily D economically

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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A chances B downsides C benefits D principles

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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A absence B height C face D course

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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A disturb B restore C exclude D yield

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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A model B practice C virtue D hardship

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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A tricky B lengthy C mysterious D scarce

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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A demands B standards C qualities D threats

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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A ignored B tired C confused D starved

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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A off B against C behind D into

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根据下面资料，回答1-20题 People have speculated for centuries about a future without work.

A technological B professional C educational D interpersonal

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