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Every insect has its own way of finding【小题1】unique kind of food. So do bees though they seem to fly aimlessly when【小题2】 (search) for the sugary liquid called nectar (花蜜). Flowers act as the insects’ air-traffic controllers and give bees clues about how much a plant can offer. Those clues can be the color, the type and the smell of petals(花瓣), all of【小题3】tell bees whether to land or not. Among them the colors play the most significant role. The insects keep track of the color of the flowers that are 【小题4】 (extreme) rich in nectar.

However, color can’t guarantee bees a good meal as it may change according to the angle of sunlight hitting 【小题5】 (it) petals. A yellow flower, for example, may look somewhat blue from one angle and red from another.

Beverley Glover, a biologist at the University of Cambridge in England, together with her colleagues, 【小题6】 (study) the effect of the color of petals on the flight of bees for many years, guessing that the 【小题7】 (strong) of petals’ iridescence (色彩斑斓) might 【小题8】 (relate) to how bees find the petals. Glover and her colleagues tested their assumption in the lab. 【小题9】 their surprise, they found that bees felt confused sometimes when the petals were very iridescent 【小题10】 bees had no problem finding the flowers with more nectar when the petals were not very iridescent.