German zoologist Randolf Menzel says bees aren’t as busy as people believe they are. "Bees are not particularly 【B1】______ . Ins

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问题     German zoologist Randolf Menzel says bees aren’t as busy as people believe they are. "Bees are not particularly 【B1】______ . Instead they sleep a lot and are lazy. They spend 【B2】______ 80 per cent of the night sleeping. Even during the day they often fly to the nest 【B3】______ they rest their wings," said Menzel, a zoologist at the Free University in Berlin, who has studied bees for four decades. But to 【B4】______ for their apparent laziness, they are actually very intelligent. They are 【B5】______ leathers and able to recognize various smells.
    Menzel said bees’ learning, like 【B6】______ of many animals, was based on a reward system. "If a bee is rewarded once for something, it remembers it for a week. But if it is rewarded three times, it will remember it for its 【B7】______ lifetime," said Menzel. He last week was awarded a 【B8】______ by the German Zoological Society.
    The memory capacity of bees means they can 【B9】______ among more than 50 different smells to find the one they want. "What is interesting is that what smells good to a bee, is also a 【B10】______ smell for humans," said Menzel.

选项 A、working hard
B、hardworking
C、hard working
D、working hardly

答案B

解析 hardworking adj.苦干的,不辞辛劳的。本题句中缺表语,正确答案应该是B。
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