Professor Karl Von Frisch, scientists from Austria, spent many years of his life researching the amazing ways honey-bees communicate in their dark hives. A. a;\ B. the ; which C. a; where D. the; that 【查看更多】
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Professor Karl Von Frisch, ____ scientists from Austria, spent many years of his life researching the amazing ways ____ honey-bees communicate in their dark hives.
