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To discover whether bees can see colors, the following experiment is set up.
To discover whether bees can see colors, the following experiment is set up.
游客
2025-07-21
14
管理
问题
To discover whether bees can see colors, the following experiment is set up. A table is put in a garden, and on the table is a piece of blue cardboard(纸板) with a drop of syrup(花蜜)on it. After a short time, bees come to the syrup. The bees then fly to their hive( =home) and give the syrup to other bees in the hive. Then they return to the feeding-place which they have discovered. After a while, we take away the blue cardboard with the syrup on it. Instead of this card, we now put a blue card on the left side of the first feeding-place and a red card to the right of the first feeding place. These new cards have no syrup on them. Thus, the blue card is on the left, the red card on the right, and there is nothing where the first blue feeding card used to be. very soon bees arrive again, and fly straight to the blue card. None go to the red card. [br] The second step of the experiment involves (包括)_______.
选项
A、changing feeding places
B、adding several new colors
C、adding syrup to the blue card
D、substituting (替换) cards
答案
D
解析
从文章的第五句话“we take away the blue card board…Instead of this card…”我们可以分析出实验的第二步是替换卡片。故正确的答案为D。
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