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It was the A/N1H1 epidemic spread almost throughout the country promoted the res

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It was the A/N1H1 epidemic spread almost throughout the country promoted the res

 It was the A/N1H1epidemic ____ spread almost throughout the country ____ promoted the researchand production of the flu vaccine.

A. that…that       B.that…which  C. what…that       D. that…what

 

试题答案

【答案】

 A

 

标签：almostspreadcountrythroughoutepidemic

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